You might want to check out the 902 case info posted by avatar_raq http://www.tomshardware.com/forum/264569-28-should-antec
"1. The 902 has enough room for CPU coolers with 120mm HSF, which should be enough to install them vertically or preferably horizontally (to push air upwards to be exhausted through the Big Boy fan). Kokin, as far as I know there's only one reviewer at newegg who claimed otherwise and he's WRONG. "
So you'll have plenty of choices for your cpu cooler you would just have to research a bit the price/performance ratio of what you can expect. here are some to get you going
Cooler Master RR-B10-212P-G1
Thermaltake Frio 120mm fans & Noctua NH-U12P SE2
might as well look at Corasir H50
self contained hydo might be option if you have tall memory and clearance issues in 1st mem slot so just have to check you mobo clearance along with some reviews as well .
some of this should get you going.