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This would be a good bet if you wanted to go mATX. Honestly, at this point I think it's useless to be getting a 980/970, as AMD's new 380x/390x are coming out in just a month or two. Even if you're very set on keeping an nVidia build, I'd still wait to see how nVidia drops prices when the new cards come out. The Silencio case is also pretty quiet, and still supports a 240mm radiator in the front of it. You could move the front 120mm fan included to the top mount for it, while keeping the rear 120mm fan where it was originally. I opted to go with 2 8GB kits of RAM as opposed to one 16GB one as the RAM there is CAS 8 1866, and only about $20 or so more expensive than the kit you were considering previously.
If you wanted to keep it ATX, you could always go with the Cooler Master HAF XB EVO ATX Desktop Case, which trades vertical footprint for horizontal footprint.