Use a 20x20mm FC & 4in1 ESC and a Runcam Micro Swift. It is specially designed for the HGLRC stacks, for a thight fit, maybe other FC/ESC combos work, but didn't tested yet.
Find the pod at Thingiverse.com:
https://www.thingiverse.com/thing:2624430
https://www.thingiverse.com/thing:2624446
There is also some motor guards and a battery pad available:
https://www.thingiverse.com/thing:3011307