Sleep works fine on SSDs, including my Force GT. Hibernate is also fine, but it'll eat up a solid third of your precious SSD space.
Thanks for the answers guys, appreciate the compliment about the rig kajabla
My peripherals are all connected to the Motherboard, and monitor to the GPU. Haven't tried connecting directly to the motherboard. But I mean, if means giving up GPU graphics for the ability to sleep, then I'd go without the sleep mode anytime.
It could also be a problem with the SSD? Mine is actually quite full, only about 9/60gigs open. I'll be getting a standard HD once the prices drop a bit more. I bought only the SSD because I didn't think I'd be packing it too full too quickly... guess stuff adds up.