Guess who has a Hitachi drive in his laptop, and had one in his old laptop, which failed after 8 months...
I used to have two drives, a hitachi and a western digital. The western digital failed at just under 3 years, but my hitachi is running with about 4 years on it. I guess I must've got a good one.
I really think you should go more on the ram, for gaming ram is very important especially if you install alot of mods for WOW *ram prevents lag spikes and cpu skippage during boss fights* everything else seems fine from above though