you can build an enclosure for the light and vent that with a bathroom fan. i did that back in the day and it made the light cool enough that you could put your hand on the glass 2" from the bulb on a 400w hps. that’s what i would do i think. you could even isolate the fan with rubber strips from an old innertube to dampen the vibrations and keep it fairly quiet. i’ve got a design for an old reflector if you want it. you can make it with flashing and metal duct tape, not the cheap crap.
the only thing you need to watch out for is you’ll be venting using the air from inside the tent. i had mine mounted outside a box and got air from the room so it didn’t pick up the smell. yours will pick up the smell and need filtered if you need to watch that where you are.