Hey man,
Thanks for being interested, I wrote that because spear let you decide what king of plane it is.
Once you see that machine is robust, capable and stable, flying on telemetry is a breeze, sure you must check the terrain first and you have to have very well set autopilot. I flew it today in 3-8m/s wind, 300-400m over the terrain, checking the new baudrate for DL mavlink and it did 12 km against the wind on 11-13 amps all the time (usual cruise is 6A). Battery didn't sagged badly or was hot at landing, motor and esc were. Battery is Samsung R25 18650 x 8 in 4s2p config giving me solid 4750 mAh usable energy and up to 40A continuous draw (I Max at 24A).
I don't feel the need of extra punch with LiIon, even when cells are on 3.2v I still have enough trust to climb with around 5ms2, not stalling, on takeoff with fresh batteries It can go vertical.
LiIon in 3s is totally different and it makes spear definately underpowered. My initial setup was 3200 mAh 3s LiIon in the front and it's bad.
I've tried initially with FPV and it's bad, didn't liked it, quality is bad, range is sh on 1.3 or 5.8, its desorienting, then transmitters and power for them, additional weight, antennae management, temp management and ground station with tracker antenna, batteries, goggles... olalala. For nearly nothing...
The gold for me is Dragonlink v3 with Bluetooth connection to the PC sending mavlink telemetry to mission planner from pixhawk with arduplane.
Super simple and robust.
If you don't have DL, and use other LR radio, you can use 3dr radio for mavlink telemetry but your range is going to be 2km Max. Try to go beyond range for 5-6min and then rtl, feeling is fantastic when you hear it coming back.
Go ahead, it's satisfying to see how spear becomes from white foam to shiny piece of engineering.
Best,