Actually I just saw a deal on Newegg with the i5-3570k and an MSI Z77 mobo in a combo pack for $285 instead of the usual $350. I know the 2500k is great and all, but the money I could save at Microcenter probably would just buy me gas for the trip there and back.
If I lived by a big city, I'd go to MC for sure! I think the 3570k would suit me even better, especially with a Corsair H60 cooler running at 4.5 GHz.
As for RAM, I'm going with 8 gigs (2x4gb) of G.Skill Sniper. What a monster of a machine this shall be!!!