Question regarding fan setup

[Kuri]

So I'm planning on getting two 360 radiators - one for the top and one for the bottom. 

I plan on using the SP120 Performance from Corsair for both of them and I'm planning

on setting them up as intake as they would filtered that way.

 

For exhaust I plan on using the AF140 in the back.

 

So my question now would be:

Is this already enough? I have enough space for another 2 to 3 fans in the front but

I'm not really sure if they are needed. And in case I should get them: intake for more

air (even though I already am pretty positive) or exhaust to get closer to being slightly

positive/neutral?

 

The case is the Enthoo Primo if this information is relevant.

[Electronics Wizardy]

You have more than enough fans. 

[Cyracus]

having 6 intakes and only 1 exhaust tends not to do so well for general cooling, so I'd recommend either doing exhaust with one of the rads or front exhaust

[LogicalDrm]

You could also try with bottom intake and top exhaust. Without having rear at all.