I did hear if you unlock the 960t you can get 6 cores, I was enticed by the FX-4100 before, but because of its terrible track record, I'd rather stick with the AM3 cpu's. As for using Intel, I going for bang for buck, and I'm glad you recognize that. I'm trying to do $800 or lower.
I've read some reviews of the 550 ti, and people said they are running skyrim and bf3 at high-ultra settings at a good fps. I might switch to AMD Radeon, but NVIDIA has a much better driver support for their cards and EVGA has outstanding support according to reviews