Patrick, check the Vertex 3 SSDs specs in comparison to the Agility. The sustained writes on the Vertex are favorable.
Are you going to OC this? If so, I would recommend getting some G.Skill mem that has tested to clock higher at like 1866 or 2000. For my build I did Corsair Vengence 1866 CL10 (4x8) kit paired with the P9X79 Deluxe and the 3930k and it works very well. Stable OC to 4.9 GHz, on H100 closed-loop CPU cooler.