With the release of the GTX980, the R9 290X is sort of obsolete until price cuts shim it back into the competition. The GTX980 offers superior efficiancy and performance both in gaming and GPGPU workloads, and has several other advantages as well, like the 4x4K hardware video decoding support.
I think you have a very high likelyhood of physical interference between the tall RAM heatsinks and the CM212. To save yourself the hassle, pick memory kit that stands no taller than ~30mm to maximize compatibility with tower heatpipe HSFs. Crucial ballistix tactical low profile low voltage memory is great stuff. I've had mine at 2133-9-11-11@1.55V on an AMD memory controller, might do more haven't tried.
Full towers are about 2 feet tall. The added expansion slots add some additional length to what is already a hard reach for many 4+4pin connectors for the CPU power. I'm not sure if it will be an issue with the V750 and that case or not, but I normally would advise sticking with a nice mid tower or smaller unless there is a very specific reason for the full tower. Typically full towers are designed to support elaborate water cooling setups, 10+ drives, multi-GPU. extended ATX form factor motherboards, etc. If your build is not going to involve any of this, then the full tower is probably going to be mostly a big piece of eye candy (or an eye sore, as time wears on).
Performance scaling of SSDs in benchmarks doesn't translate to much impact on single client disk access workloads. A less expensive MX100 series SSD will offer the same user experience.