No we keep the room at around 70 F to 75 F.
Over heating the roosts after they get going has many negative effects.
Just keep the room out of the 60s F you don't need fungus now.
We moved from the same Fluorescent set up you have.
Trying to keep the room cool was the problem then, now with 4 LEDs & 2 large heating pads we use a small Oil filled heater.
We use 1 in the bathroom, 1 in the plant room & 1 in the chicken coop a good safe heater for any use...