Hey fergusonnn, have you done anything on this build? I have a similar case with the same internal layout wanting to do a sleeper build.
For the PSU, I would recommend a modular or semi-modular PSU to cut down on unneeded cables. I bought a SFX PSU for the PSU cables and the optical drive cables to not bump into each other.
I haven't done anything with mine because I'm having some planning issues with what I really want to do, which is liquid cool the graphics card with a NZXT G10 bracket.