I'd say you'd be best off narrowing down your list of requirements
do you want more than 4 slots for memory?
What about CFX/SLI? Just about every X79 board will be built to be capable of running at lest two video cards, but some are clearly designed to be perfect for 2, but no more (my Sabertooth for instance), while others are built to accommodate 3 cards but really no more than that, and others still are definitely built for up to 4. Since it sounds like you're not wanting to go all out it sounds like you might not care about running more than 1 GPU, which would even leave something like a mATX option as a possiblity which could save you some money as well as open up the possibility of a smaller case.
avoiding chipset fans might also be a priority of yours in order to keep noise potential down, there are quite a few X79 boards that have fans.
for instance I ended up going with the Sabertooth because I liked the option to have 8 slots for RAM as well as knowing I'd never run more than 2 video cards and the extra spacing between the two primary PCI-e x16 slots would help if I ever do add a second card. And since I was going for performance first and foremost, the fact that the chipset has a little fan on it wasn't exactly a dealbreaker.
when it comes down to it there really aren't any "cheap" s2011 boards, they'll all be at least decent overclockers, and 4.5GHz is a goal that should be achievable on any of the X79 boards that I know of (provided you have a capable cooling and powersupply)
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