For that system I would look at a Thermaltake Toughpower, Earnmax Galaxy, or PC Power and cooling PSU, all over 750W. You have a lot of juice sucking equipment in your rig so you are going to need a PSU to carry the load. Also make sure that you get a PSU with a good 12V rail. Get a bargain bin PSU and most likely it will take down your whole rig.
Personally I run a Thermaltake Toughpower 750W in Sheila (specs in sig below) and it runs just fine.
Cheers
Cameron