Are these good positions for my case fans? (picture included)

[SigmaOctantis]

Picture: https://imgur.com/a/UxGNc

I'm a bit conflicted about the positioning of my case fans, particularly with the Corsair AF 120 Quiet Edition which I have placed on the top of my case to act as an exhaust (case is a Corsair Vengeance C70). What I'm wondering about is if the exhaust is conflicting with the intake SP 120 that's attached to the heatsink. Wouldn't the exhaust be sucking away cool air from the SP 120 and thus making the cooling less efficient than it can be? What I notice is that the top exhaust is blowing out cool air while the back exhaust is warm-ish (not hot though).

My temps are not exactly bad, but if it could be improved then I'm always up for it. CPU currently idling at 33-34 degrees Celsius in a room that is 27 degrees Celsius (about 80ish degrees Fahrenheit). Temperature tends to spike to 36-38 sometimes when I switch tabs, but goes back down in a second.

Would I be better off removing the AF120 from the top of the case and putting in the front of my case to act as another intake?

 

[CountMike]

Ideally both fans should blow in same direction. See if you can turn CPU cooler around or place exhaust fan at the back of case. Do you have any intake fans too ?