An i3 beats the 6300 in most games. I owuld definitely get an i3 4160 and an h97 board and then you can upgrade to an i5 later down the road. Can;t go wrong.
100% agree that ther eis no use it getting a 120.140mm cooler. Even some of the lower end 240mm coolers are beaten by air coolers.
Not to mention air coolers are much quieter as well.