thanks for all replies.
so, in my case I'm already on the worst choice. what can I do?
A) buy a i5 2500k + cheap CF mobo
B) wait for FX-8350/6300 (if my mobo support it)
C) sell the 6850s, buy a GTX 670
D) sell everything, buy a i5 2500k + GTX 670
F) sell everything, buy a PS3 (??)