first of all, the cpu cooler wont fit, its for socket 775, yours is 1155.
your hdd is small and slow, i think its made for laptops, better get a wd blue 1tb
your videocard is pretty low end, id recommend you something better like a hd7870/7950 or a gtx 760.
if you stay with you videocard, i would put the cpu a bit down, a overclockable i5 is a massive overkill for your 650ti. if you want to stay with intel, id go for a 3470/3350p with a cheap h77/b75 board and stay with the stock cooler, since you wont be able to oc. another good option would be a fx6300 with a decent am3+ board (atleast a chipset 970 one)
leave the ethernet adapter, your motherboard got already one.
i also highly recommend you to change the psu to a better one, atleast a 400w unit from a well known brand like seasonic, xfx, corsair, rosewill.