You might not even need a case. What are your complete specs? Before I switched to an AIO, I had 4 fans. Two Noctua intake, 1 rear fan that came with the case, and one on my Hyper 212 EVO. Never went above 70c. You may also want to think about clutterness. If it is clutter, airflow will not be proper. Also you want to think about how air will be flowing.
The system is very organized and I've taken out Drive cages to make it cleaner. Everything doesn't go over 80c but I'd like it at around 50c
My biggest pet peeve is the CPU temp on my fx 6350