Unfortunately Amazon is not the best place to buy RC parts. The vendors are all over, the selection is random and the prices are mostly not great.
Since this is amazon and you only have $100 to play with. You might look at the
Duet RTF or the
QX Nano RTF. Both are nice indoor outdoor models that will get you flying and provide lots of entertainment. You can use the left over money to buy extra batteries and a 4 battery charger and crash parts. Definitely worth considering if you have never flown. You may not find it fun at all...
If you are determined to build the Towel with the money then you going to need the parts it calls for. The specs are important because they determine the size and the weight and the power of things.
Looking at your list it does not really match the build you are proposing to do. It's best to stick close to the recommended parts if you want a plane to fly unless you have experience and knowledge enough to deviate or you have the budget to experiment. You can deviate from all the plastic 3d printed parts since you can make them with balsa or thin plywood (1/6 or 1/8) and hot glue but the power items you need to follow fairly closely.
So going by this...
http://makezine.com/projects/make-30/the-towel-rc-stunt-plane/
And I make no guarantees on their choices since I've never build one or spoken to anyone that has..
battery
1500mAh to 2000mAh 2s lipo. You need to stick in that range because it broadly corresponds to the weight. Here's a nice one. 25C is a bit more than you need but 20C is probably the minimum to buy these days and the price seemed good compared to others on amazon.
http://www.amazon.com/Turnigy-nano-tech-1800mah-25~50C-Lipo/dp/B00TGS02PA
motor
Tower Pro Outrunner 2408-21 or equivalent. I couldn't find that motor on amazon. Here is a table of some similar motors.
http://www.flybrushless.com/motor/similar/211
You will have to see if you can find one of them or perhaps order this from elsewhere. Too much work for me...
ESC
30A ESC and 1A or greater BEC
http://www.amazon.com/30Amp-Multi-rotor-Controller-SimonK-Firmware/dp/B00MB1Y3U4
or
http://www.amazon.com/TURNIGY-Plush-30amp-Speed-Controller/dp/B00URCO7E6
servos
2 x Hextronix 900 or equivalent.
There are other suppliers so you can look around but this pretty similar the Hex900.
http://www.amazon.com/RioRand-TowerPro-micro-Helicopter-Arduino/dp/B00JJZXRR0
Get 3 or 4 if you can find the right deal.
props
9X6 or 10X.4.7 (diameter in inches X pitch) Since this is a pusher you could get CW props but regular CCW will work find since the motor can turn in either direction. Get at least 2. Maybe two of each so you can see the difference. Here are a couple of the suggested sizes I found.
http://www.amazon.com/ezcosplay-LP09060E-Electric-Composite-Propeller/dp/B00FYNYQOE
http://www.amazon.com/Slow-Flyer-Propeller-10-4-7/dp/B0006O6SD8
Thrust does vary with the style of the propeller as you can see if you explore
www.flybrushless.com. To start you really want everything slow and easy so the slowfly prop might be better to start but its a guess.
Transmitter/Receiver
Features you want to start include expo, rates, servo subtrim and servo reversing etc. For the Towel you will need elevon/delta wing mixing too.
The HobbyKing T6 has is points and it is ok if its all your budget will stretch too but it requires you to program it from a computer and it does not have expo. The particular listing you found comes with a receiver so that does keep the price in check. Its not a bad choice for your first model but you might find it annoying for you second if you are still flying your first.
The
FlySky T6 is better. It has all the basic features you would want to start but you will need to by a receiver. This one should work. It must be FlySky AFHDS protocol.
http://www.amazon.com/Channel-Receiver-FS-CT6B-FS-TH9X-Transmitter/dp/B010M4H3CQ
However, the FST6 has sort of been replaced by the Flysky i6. The i6 has all the same features but adds telemetry and and few other nice thing and only requires 4AAs.
http://www.amazon.com/FlySky-FS-i6-M2-2-4GHz-6-Channel-Transmitter/dp/B00PF160IK
It's a bit smaller than the FlySky T6 but by all accounts its a better radio. The receiver must be FlySky AFHDS or AFHDS-2A. The iA6B receiver is the best match.
http://www.amazon.com/Flysky-FS-iA6B-Receiver-Compatible-Transmitter/dp/B00VE3Q3XU
The B version supports telemetry and PPM. There are lots of other Flysky AFHDS receivers and they are quite inexpensive which is an advantage if you start building you own planes.
http://www.rcgroups.com/forums/showthread.php?t=2275319&page=4
You can get a much better deal on the FS T6 or FS i6 or probably anything on the list from Banggood but you would have to use other money.
http://www.banggood.com/FlySky-FS-i...ansmitter-With-FS-iA6B-Receiver-p-983537.html
http://www.banggood.com/FlySky-Data...-T6-Transmitter-Firmware-Update-p-982289.html
I don't own any of these radios so I'm going by the features reviews and and what I've read in forums so you will need to read around and see if you agree before you order.
Charger
The
B3 charger is a balance port only charger so it should be quite safe but a bit slow. It's probably good first charger if you have never dealt with lipo batteries before. You should also get one of these...
http://www.amazon.com/Neewer-Fireproof-Battery-Safety-30cmx23cm/dp/B00DSKS2VI
and watch this as a start to getting familiar with lipo safety
http://flitetest.com/articles/lipo-battery-bunker
The battery alarm is a great idea. You can use it it check your battery and tell you if you it its time to land. Get a couple
Pass on the flight stabilizer. It's not sophisticated enough to help and will probably hinder you. Just start practicing on a windless day. Be careful of the prop, hand launching a wing. Easy to lacerate you self.
The propsaver is also a good idea but you will need to size it to whatever motor you find. It is probably not necessary for a pusher plane like the Towel since you don't crash into the prop. You could pass on that if you can't find the right size or you budget is getting very tight
Good luck and happy flying.