Hello there! Welcome to the Multirotor world of RC. I have to warn you that your opening a can of worms when you venture to build your own though. You won't be able to stop building/modding/flying! I have few warnings and suggestions if you want to get into this.
WARNING:
-You WILL spend at least %50 more than you expect for your first few multirotors
-You will not have a multirotor that flies like your usual RTF machine. It will be difficult to fly.
-It will take you more time to adjust the settings than you think. Especially the P and I settings. Be prepared to work with the "trial and error" method for a few days.
-Once you build a successful, well flying machine, you wont be satisfied... you'll always want more.
ADVICE:
-Get somebody who has built one to help you along with yours. I spent a few weeks/months on my first multirotor, but as soon as I went to flitefest in 2015 and had help, I had a tricopter flying within a few days.
-Use FliteTests Quad pack, its very useful and reliable and all the power issues are already layed out and taken care of.
-Make a frame that you are willing to break and scratch. Don't worry about it looking pretty. It will look a bit more used after every flight. Build one out of the simple wooden booms first so you can fix your crashes for cheap, then move onto those fancy carbon fiber things.
-USE A KK2!! I can't emphasize enough that this board is an amazing beginners board and is really good at introducing beginners to the maths involved with flying a 4 rotored robot made of sticks.
-DONT GIVE UP! It will get very difficult at some times and you will wonder why you even tried. (I built 3 unsuccessful waste-o-money quads before I built one successful one) But it will be totally worth it once you realize that your flying a machine that you put together with your own hands
-Start with a quad. They are the easiest and simplest to set up and operate.
Also, I believe your DX5e should work fine, but if you want to get more into other multirotors and aircraft, I'd highly recommend upgrading to a DX6i. It's a lot easier to use and can help you work out a lot of problems with multirotors when they arise.
If you have any questions please message me. I'd love to answer any other questions your have. Hope you have a fun time building and flying!