Made 2 mod's Turbine mount and retracts. I did not add brakes because jets 6lbs and under does not require brakes. (Mine is 5.25 Lbs wet) And most of the time I fly off grass. I have flaparons but never have used or needed them. The retracts I custom made But you don't have to do that use eflite 15 - 25 Tricycle Electric Retracts. Here is a video of me starting the jet, it will be a good video to use for parts placement.
https://www.youtube.com/watch?v=ipZ0mfQl4FE Here is another video of my retracts ( those are not the gear that I made). The ones in video sucked
https://www.youtube.com/watch?v=4BEVkZMBnCg