This is my firts quad, build a year ago. I upgraded some parts since. Not too much space in it, but with adapted parts, fit perfectly. A two board build is possible only if the PDB has a free component side, and has to be stucked againts the main carbon plate. PDB included with the kit is not that good, and it's a mess with it. Replaced it with a Matek PDB with OSD and 12V linear regulator. Perfect for fpv gear, no more noise :)
The eachine camera fits well with the provided mounting plate. Image is very good, but WDR is waaay too slow.