I'm also speccing for the same case. The PSU I'm currently speccing is the
Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan
I currently use a SG07 with an ATX power supply and non-modular cables. it is a nightmare. I figure I can save myself alot of pain by having no extra cables lying around and store the extra cable length in the space next to the PSU, rather than next to the GPU.