yeah, I'm definitely doing a modular PSU next time. There are so many cables on my 750W power supply, I can't imagine
making it work in a mid case. (then again, I have 4 SATA drives on top of the M2).
If he's doing 4k videos, he'll want a SATA storage drive too. 4TB or higher. If it's mainly still/DSLR raw files or 1080P vid files, the 1TB will last for awhile.
I'll probably have to expand my 4TB storage drive next year.