I think that will work. What you need is 26A of total combined current, and with that, you have Quad-12V rails at 18 amps each. That should provide more than enough of what you need and should allow room for more upgrades if needed.
You picked a very nice PSU, btw. I don't know if I would buy it off of Amazon, but OCZ makes AWESOME PSUs.
EDIT- Here it is on newegg.com: http://www.newegg.com/Product/Produc...82E16817341010
It's about 20 dollars more, but for that, you are buying from a much more reliable company.