I would go with the LGA 2011 platform because it offers capacity and you have the option to add more ram if needed (up to 64gb) with the graphic design and another video card at full x16 bandwith (x16 ,x16),
The new Ivy Bridge processors coming out will be the i7-4960x , i7-4930k and the i7-4820k so all three will have the same feature capacity for the motherboards and it will be the clock speed and the core count that will be the difference. The top two will be six core and the other will be a quad core.
I would stick with the 4770, you can be sure that the 4960x will be at least twice the cost, probably closer to triple. I have always been of the opinion that the extreme series cpu's are past the point of diminishing returns, too expensive for the performance gain. The 4960x is undoubtedly faster, but I don't think it's worth it, especially from a gaming standpoint. Unless you are doing extremely intensive rendering work, or need a ridiculous amount of memory, the 4770 is a far better option in my mind. Might as well save yourself $700+ and call it a day.