Missing a case unless you already have one, and you only need an aftermarket cooler if your overclocking.
This power supply will definitely power that system and is of much higher quality:
http://www.newegg.com/Product/Produc...82E16817139004
Mobo is socket am2/am2+ and Dual channel whereas that phenom is am3 and the G.skill is ddr3
so need this mobo instead to make it work (or equivalent) http://www.newegg.com/Product/Produc...82E16813128378
This power supply will definitely power that system and is of much higher quality:
http://www.newegg.com/Product/Produc...82E16817139004
Mobo is socket am2/am2+ and Dual channel whereas that phenom is am3 and the G.skill is ddr3
so need this mobo instead to make it work (or equivalent) http://www.newegg.com/Product/Produc...82E16813128378