I'm wanting to make a dual 8800gtx system as well. I'm still debating wether to do a raid or not, so lets assume I go with 2 hard disks. For mods I'll be wanting to run a single 12" ccfl and perhaps 2 small LED lights.

In my current system im using a Hiper PSU thats held up well, and I love modular connections. Think any of these PSUs can handle that setup? Oh, and my advice to the OP is to not skimp on the PSU, I did that with my first build and paid for it.