Due to my lack of $$$ (No job at the moment) and about $2,000 in debt, I"ll be upgrading my current system (See below) In about 4 steps. I'm looking for "future" advice. Such as some advice I got before about the bulldozer CPU's. I was about to purchase a 1100T when I was told some very nice CPU's are coming out.
Since you only got 3.6Ghz with a Hyper 212 I'd say you got a C2 chip like me. Anyway, I'd say go crossfire first, then go with the RAM and Motherboard, followed by the CPU and others. That's what I would do, but it's up to you. Also, there is no point in getting a 2GB card due to the fact that if you crossfire it with your 1GB card, only 1GB will be used. Get another 6870 1GB.