indoor temps?

hey guys, is 81-82 degrees reasonable? this is my first time using a tent and that's right about where my temps are sitting. i have 2 600's in a 4x8 with air cooled hoods. 4 inch fan/filter exhaust. i suppose i can upgrade to a 6inch system, but the sides are already sucked in a bit and not sure if the 6inch is overkill or how much it would drop the temps much anyways. i've grown a long time (not in a tent) and always had temps in 70s, is being in the low 80s going to hurt me tremendously. thanks for any help guys. any tips or advice or comments welcome and appreciated.

that's good from everything I've read so far here, my tent is smaller and with a 6'' I have the same temps on the high end but sometimes it will go to 78 F... with a full tent it might increase a few degrees but even at 85 I think you should be ok... possibly think about a co2 system I heard they help plants a lot in higher temps .. I'm still learning too

cool thanks, ive been thinking about starting to use co2.