The 2 5770's in crossfire is on par or even sometimes better than 1 5870. The core i5 will prevent any problems with the cpu bottlenecking the system. The 620W psu should be plenty to run everything along with 2 graphics cards.
Ragsters - I got ahead of myself. UPS is delivering everything Monday afternoon except for the 4770 and Plextor optical drive. I'm recycling those. I still want to get a high end monitor for professional digital image and video editing, rendering, and encoding. That's going to cost.
It took me several weeks of searchng for and reading technical reviews to figure out the cpu, motherboard, and memory combination. The big problem was finding benchmarks and comparisons for the mainstream applications I will be using. It took some digging. The system can easily cruise along at 3.3 to 3.6Ghz without breaking a sweat. It can actually be pushed to 4.2Ghz but heat would be a problem. On Liquid Nitrogen the system can be pushed over 5.2Ghz.
I would definitely go with the samsung F3 if its an option for ya. I didn't include it in the build I posted because it was out of stock. But if it's available take it. If you want better performance now go with the 2 5770's over the 5850. If you want to be able to upgrade easier later take a hit in performance and do the 1 5850 now and add another down the road. The antec 300 is a good case but I would take the NZXT over it because of better cooling.