From experience with 3 2011 x79 systems, 3820, 3930k and 4930k - the 3570k, 4570k, 4770 CPUs and their respective socket MB's perform nearly as well, and are far less expensive and perform in a better $/fps ratio than the x79, so long as editing huge video files and stuff like that isn't your primary use.
Another thing to consider OP is that the new x99 intel chipset as well as new Nvidia and AMD video cards are coming out in a few months or maybe even sooner, and along with them typically comes a corresponding drop in the current cards that are available. So, the 7" series should drop quite a bit once the 8" series get here. The socket 2011 will have a "new" socket 2011"x" that the new 5 series 8 cores will fit into, so again, a corresponding drop MAY happen with the stuff available right now. The very best thing you can do is wait a couple/few months and see. Price drops may or may not happen. I know the 3930k and the 3820 I bought in December of 2012 still are the same price as they were when I got them on sale, but many other chipsets and motherboards dropped significantly. Keep your eye on the really decent $/performance ratio chips like the 4670k as well as the x79 and stuff like that, as well as the 7 series Nvidia cards. IMO in a few months you'll very likely be able to build a faster, yet cheaper, system than you linked in the OP, something that will also likely run the new version of AH better and for a longer period of time.
Again, just take a breath and wait a little bit, as now isn't the best time to buy due to all the new stuff coming shortly.
