Sorry, that wasn't clear to me.
What fans are you buying, then?
Front should be intake and rear exhaust, but side fans can be tricky, it depends on the components you're cooling.
Example: As I have a single slot graphics card (exhausts hot air into the case) my side fan is exhaust. If my card was dual slot, I'd have the side fan as intake.
My CPU cooler is not "top down" cooling, so a fan blowing onto it wouldn't help. If my cooler was top down, a fan blowing directly into it would be beneficial.