Do these parts work together?

not bad but not good either. don't buy a 5400rpm HD........... the price must have been appealing but not sensible.

buy your ram in pairs.

the cpu?apu........... if you're buying a good discreet graphics card like you have in your basket, why not buy a 750/760k processor instead of the one you did?

also, why not look at newegg for better prices?