I assume you've read: http://www.tomshardware.com/reviews/core-i7-4960x-ivy-bridge-e-benchmark,3557-10.html
As Chris sums it in the first paragraph on the last page (page 10): "Does Intel’s Core i7-4960X, specifically, get me all revved up about upgrading? Well, no. Not really. But then again, those thousand-dollar CPUs rarely do. What about a hypothetical Core i7-4930K replacing the -3930K under $600? That’d be a tough sell for all of the same reasons. Mainly, it doesn’t push performance high enough to warrant a big price tag. Any interest in a Core i7-4820K? I’d be more inclined to bet on a -4770K/Z87 platform, if only for the newer chipset’s extra functionality."
I think that "as an aspiring 3D artist" a 4770k will probably do it for you. Consider an aftermarket cooler to give you an OC boost in performance (don't expect miracles, Haswell isn't a super overclocker) and you'll be happy with your choice of value over faster renders. Honestly, it's hard to gauge how demanding your activities will be coupled with how much you will value a few seconds or minutes of render time vs. what the money savings will mean to you.
The key to the whole thing, though, is the fact that you aren't building in 2 months or so. My advice, wait two months or whenever you are ready to build and then re-evaluate your options. Maybe there will be a more definitive answer at that time.
Another option, what about a 3930k? Used, maybe? I dunno, the new ones are pricey, for an older part. But the mobo would support Ivy-E so at least there is a slight upgrade path (but too pricey to be worth it in my opinion). The flip-side is that, if we follow Intel's pattern, socket 1150 will also have a poor upgrade path, so it is what it is. Re-evaluate when you are ready to buy.