4X4 grow tent with 2 plant DWG SCROG

hey guys, just here for some advice/opinions. I got 2 plants in a 4x4 tent with a 100 watt light currently in veg. I made a nice 4x4 scrog screen and im using 5 gallon buckets in a DWC setup with a top drip to get the root going. I got 2 4" fans going, 1 pulling air out of the cool tube and the other blowing fresh air in from outside. the 2 plants I got going are NYPD from nirvana and SD from royal queen. Im having a bit of a heat issue at the moment in the tent, during the day it runs to about 92 degrees and about 84 at night. Im going to be buying a 6" fan soon for extraction (hopefully that will help) Im using the Optimum nutrients A+B with a little B1 for the roots. Im also having the put ice bottles constantly in my control bucket cause the water seems a little warm. (gonna be installing the AC in the room where my grow tent is in a few weeks so i hope that will help with rez/tent temperatures.
Im gonna be using the SOG method, Am I doing this correctly? or should I put my T8's in the tent for now until i can afford to get a better fan for exhaust? Also the for the exhaust fan, i have it just blowing back into the room, should i exhaust it outside? here are some pics of my set up.

From my understanding when you SOG you want single cola plants so a trellis net isn't going to do much good.

As far as your heat problem, it's directly related to your cooltubes outtake is blowing out of the tent into the room the tent resides in correct? I was doing the same thing and was getting insane temps. I dropped my tents temp 15 degrees by venting the cooltubes air OUT of the entire room. When it blows into your room the hot air is just pooling making the room/tent way too hot.

no, I meant im doing a SCROG grow (screen of green). Yes the air is pulled out of the tent into the room where the tent resides in. Ok, so ill get a bigger fan when I can and exhaust the air outside. for now I put 2 duel T8's 40 watts in the tent, 1 for each plant for 2 weeks or so until I can afford an extra 200$ for a 6 inch fan.