I've got a P5Q PRO also, and I must say, I've encountered no problems with it whatsoever. The BIOS is great. Lots of options, of course. The Gigabyte equivalents might be a little cheaper, but I like the ASUS boards just as well. The HD 4870 is a great card to compliment the build. Also have room to expand if/when you choose to buy a second video card.
EDIT:
Basically, you're in pretty good shape.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum