Advice and help on my first from-scratch computer build

[Slaymate]

I have a few TRUE's for sale here http://www.techist.com/forums/f40/fs-3-thermalright-ultra-extreme-120-true-232239/
Go with the Tuniq TX-2 paste, it's excellent and priced right.
Newegg.com - Tuniq TX-2 Cooling Thermal Compound