Ok... Well a Rosewill 650w Capstone G is a pretty decent PSU - it's AWG 18 i read on a review. Well then maybe 3 x risers that can take a 6 pin PCIe might be better and 3 x sata ones - connecting one cable to 2 x risers and the other cable to 1 x riser and the ssd.

Wish they just put power headers on them, would make things so much easier.