Don't bother moving to PC Unless your going to buy the game + cheat. it's not worth it. All that's left playing blops 2 are ******* using aim assist cheats. there are 5 cheaters in every server using these new slow aimbots. very easy to spot these cheaters.
Anyway if I were you, instead of buying a pc get the new consoles, you can probably get both ps4 and xbox1 consoles cheaper than 1 good gaming pc. (PC is the land of artificial aim) if your not going to join in and use the cheats it wont be any fun losing all the time to cheaters.