Quadriplegic build

My brother decided he wanted a crawler after watching me with mine. So after a few weeks of research and help from you guys, YouTube and the hobby shop I got it sent up so my brother can drive his car with one stick. Bought a spektrum DX6e so I can adjust stick movement depending on my brother. Probably overkill but the hobby shop talked me into the furitek brushless set up since I can set up even more control through the app. Injora slider to make the esc and receiver fit. Leaving the rest stock so my brother can decide what upgrades he wants to add. Only thing left is to find tubing to extend the joystick for my brother to control. Will probably get one 3d printed. Thank you to everyone on here that has give me help and answered questions.