I want to do something similar but at a cheaper price I mainly want to keep everything but the flight controller and esc and transmitter, if you can find anything better let me hear it thank you guys!
For $70 that Flight Controller is very good value for an H7 which is what you want. Pick any BLHeli_32 20x20 ESC. Pick the cheapest Transmitter that will run EdgeTx like a Radiomaster Zorro.
Might depend on where you are buying. This one is good: Xrotor
For the RC system go with ELRS. So with a Radiomaster select the ELRS option and then buy a RP1 V2 Receiver. The 5" Build has a TBS Tracer69 VTX/Rx so you will need something else for the VTX.
Do you have any FPV gear?
So keep flight controller get a cheaper esc get a cheaper transmitter do I have to have a controller or can I just use the mission planer as I am mainly using gps