Heat and light leak questions

I have 7 plants in a 10' x 5' x 10 storage room, just beginning week one of flowering.
I recently put up a poly sheet in front of the door to help with keeping the smell down. I have concerns that the temperatures may be getting too high? before installing the poly I could keep the temperature from 25C to 27C but now its floating around 30C maybe a little above, is this ok? humidity is anywhere from 20-30%.
I have a 4 inch blower exhausting with a charcoal filter and just a passive intake near the floor.

I'm also concerned about some small light leak? if i leave the door open (my poly is clear) some light may leak in for a couple hours in the morning before my 1000w HPS comes on will this do any harm during flowering? (by small i mean some daylight peeking through dark window shades in adjacent room) Its not like I'd be able to read a book in the room but there will be some dim light

temp is a little high fan sounds a little small your room is 500 cubic ft. so to exchange that air one a minute you need a 500 cfm fan not a booster fan. all light leaks are bad man. keep the door shut and just get the air moven in that room.

Thanks for the help, positive rep for you. I will head out this week to pick up a new fan. (the one I have is only 177 CFM) I'll remove the poly to allow better ventilation and take the Ballast out of the room, see how that helps. Is 20-30% humidity ok?

for flowering humidity is ok. dont wont bud rot mold. deff remove the ballast and that mite cure heat problem.

Things just took a turn for the worse. I just found some little bastards crawling on my leaves.
Thrips. motherfuckers.