If I was going to build this again today, I would get a G3258 instead of the 6300 and the SPEC-01 case.
Actually, you should stick to the FX-6300. The G3258 had its time but it needs to be put to rest since it is only a dual core with no hyperthreading. Also, I'd recommend swapping out the PSU for an Antec or SeaSonic, two of the best PSU brands out there. Besides that, you did really well with this! I am a big fan of that HDD and the RAM. +1