is my rig going to cut it?

[artantaaa]

If you're sure you won't ever think of overclocking, you could save 20-30 bucks with the 4570. I would get the 4670K though. Here's a combo deal on newegg for $405.89 that has the 4670K, Z87 board, and 8GB of ram.
http://www.newegg.com/Product/ComboBundleDetails.aspx?ItemList=Combo.1461045