Normally for a positive pressure, Front,bottom and Side as Intakes and top as exhausts will serve good. (for normal Heatsinks)
If you are doing a push-pull with Hyper 212 Evo, this type of airflow would be perfect(positive pressure). Front,side,bottom and 1 top fan as intake and back,top 1 fan as exhaust will keep everything hyper cool.
With my corsair 500R and a hyper 212 evo, the top config gave me very good temps.
For case fans, you can choose from:
1) Noctua NF-P12(120mm) for case fan and Noctua NF-F12 for Heatsink fan(120mm)
2) Corsair AF-120/140 (for 120mm/140mm) for case fan and Corsair SP-120 for heatsink(120mm)
3) Silverstone AP 121/141 for case fan (for 120mm/140mm) which topped the performance chart in tomshardware tests(check the link below)
For LED fans and other comparisions check this :
I'm using 2x120mm Noctua NF-P12 and 2x140mm Corsair AF-140 on my Corsair 500R, they are dead silent and doing the job well.