First Time Build!!!! XD

1. PSU: In terms of wattage, it is more than sufficient. In fact it's more than necessary to be honest. I've never seen Ultra X4 though, so I'll leave that up to others.

2. GTX 560 is good enough for many games these days, just not on ultra/highest. You haven't mentioned what you'll be focusing mostly on. Games? Productivity? Video encoding? etc.