Looking to upgrade Intel Core2 Duo 6750

So as the title suggests I'm looking to upgrade my intel core 2 duo was thinking this

Intel i5 2500K
MSI Z68A-GD55 (B3) LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS

something like this
http://www.newegg.com/Product/Comb [...] mbo.763034

RAM I don't really have much of a clue I would think in the ballpark of 8 gigs I'm not sure what happened to tri channel boards but I don't really see any. And I'd really like to stick around the ballpark of around 400-450 for the total project

I have a XFX 5770, a 90 gig vertex 2 ssd. And I'm using the coolermaster sniper was also thinking maybe picking up one of corsairs water cooling solutions but if I can hold onto my Zalman 9500 that would be amazing.