That RAM is DDR3-1333 @ 1.5v with CAS 9 latency. That's pretty bad, which explains the low price.
It will suffice for anything you need it for, but if you want really good RAM look @ this DDR-1600 1.35v CAS 7 latency RAM for 94.99
I personally would get an 8xx series motherboard. ASUS is a good brand, but I personally would get something like an 890FX. Obviously you're looking for multiple card performance. Just my 2c. I would say more but I gotta get back to work!
Take a look at the NZXT Lexa S on Newegg. $63 with shipping, very solid case, magnetic latch, bottom PSU mouth, comes with 3 x 120mm fans (one w/blue LED) and a 140mm fan along with room for one more. Has rubber grommets for water cooling and cable management, dust filters and more.