The corsair vengence RAM in your parts list is good RAM. The list is very good but you should know that 800W is a lot of overkill for your gpu. You've already got it, so nothing you can do, but in the future you can fit a lot more graphics on 800W.
Sorry, i copied and pasted from my Guru3d Post. I know the PSU is overkill, but he wanted to be able to upgrade the GPU come christmas time. So i figured why not get a quality one right now. Plus it was only 120 dollars at the local store.
The corsair RAM is fine from a performance standpoint, but those heat spreaders could get in the way of some aftermarket heatsinks. You're safe getting the combo, but be aware that if you ever plan to overclock (or just buy a replacement for the terrible sandy bridge heat sink) then you'll have to check that your replacement heat sink will clear the ram.
The rest of your parts look good. The Challenger and Spinpoint are what I would recommend and those combos are reasonably good deals.