Will I need aftermarket case fans?

Solution
It appears the case you chose has room for 7 fans. 4 are pre-installed:

two 120mm side fans

one 120mm rear fan

one 200mm blue led top fan

You can add an additional three fans:

one 140mm front fan

one 200mm side fan

one 200mm top fan

personally, i would consider getting a 140mm fan for the front intake, doesn't matter whether it is a led fan or not, but since the top led fan is blue, that would be what color led fan I'd go with if you decide to get an led fan.

I'd hold off on the other two fans and see what the cooling situation winds up being, only ass them if necessary or if you want more led fans on your build, it's up to you.
I will recommend aftermarket case fans for overclocking to much higher speeds, I recommend Corsair AF 120mm High Performance editions for the most performance, but you have to remove any obstructions eg. HDD Cages (even if they are empty), parts right next to them, etc.or else their performance will be greatly reduced. For moderate overclocking, the CPU cooler is enough to cool the i5 by itself.
 
It appears the case you chose has room for 7 fans. 4 are pre-installed:

two 120mm side fans

one 120mm rear fan

one 200mm blue led top fan

You can add an additional three fans:

one 140mm front fan

one 200mm side fan

one 200mm top fan

personally, i would consider getting a 140mm fan for the front intake, doesn't matter whether it is a led fan or not, but since the top led fan is blue, that would be what color led fan I'd go with if you decide to get an led fan.

I'd hold off on the other two fans and see what the cooling situation winds up being, only ass them if necessary or if you want more led fans on your build, it's up to you.
 
Solution