guessing ur buying from a prebuilt website like origin or ibuypower? lol "Dual" 7970 is overkill along with the 3820 for 1080p gaming, but still will last a bit, socket 2011 is getting an ivy bridge line of cpus on it, the only current intel socket to get another generation, but like the other 2011 cpus dont expect another $300 one on release, if i remember the 3820 did not release with the initial 3960x and 3930k could be wrong dont remember to well.
That Azza power supply may say 1000watts, but azza is not a well known power supply manufacturer for quality psu, dual 7970s do not need a 1000watt psu.
Id go for higher speed ram if u can 1600 is fine for gaming, but at the moment the cost of ram from 1600 to 2133 is only about $5-20 apart.
Along with the rest of the specs, might as well throw a 256gb ssd or something for the OS lol
Its all good, and dont doubt if nothing is doa will work great