Winter Project

[poseidon2]

Hello all! Opinions / advice please if possible.
I currently fly a completely DJI equiped F550 and it works fine. For a winter project I fancy putting together a quadcopter using a different make of flight controller and frame and steering clear of DJI stuff. Just want an FPV camera rather than my current Gopro and don';t mind sourcing stuff from abroad coz I';m in no hurry. I realise the set-up part will be more taxing but like I say it';s just a project. Cheap would be nice
I know all the info is on here somewhere but it';s so scattered it';s do';in my head in.
Thanks in advance