Removing the housing will not help the heat situation. The hood will be gone but the light will still be there, emmitting the heat.

You MUST get the heat OUT of the room...

FRESH AIR IN STALE HEATED AIR OUT.

Perhaps you could install vents somewhere? I saw three brick walls. you could vent the door itself and solve your heat issues.

That is, if you door isnt made of brick too

Sorry but you need in and out air flow.

As for 90 F temps, i can tell you first had the dangers you face....

EXTRA LARGE FAN LEAVES....

These grow longer to have more surface area to displace oxygen and wastes thru the stomata on the underside of leaves.

This also helps create shade and attempts to lower or regulate the internal temps.

The resulting large leaves will shade lower secondaries and reduce yeilds.

It also increases odds of sexual confusion.

I suspect it will lower THC production but don;t know this to be fact.

But, you can still grow some good weed with it