Funny, I shop at the same 2 stores you linked and have talked to individuals at both. I will not shop at Texas Hydro again. I have my personal reasons for that decision, but I can say that the customer service at Jolly Green was A+ versus the FAIL at TH.

That being said, one of my boys worked over at Texas Hydro for a minute. I wouldn't purchase any of their hoods or proprietary parts, my buddy told me of the numerous complaints and lack of compassion TH had in regards to them.

If I were you I would pick up something more universal like a Sun System. They make fantastic hoods that are 95% reflective and feel like quality. Not like flimsy bendable sheet metal hoods.

I have air cooled single lights in a tent before as well. I'm assuming it's a 4x4 tent, if so, 186 CFM passing over the light should be sufficient provided you exhaust out of the room the tent is in. This is important. Feeding warm air back into the room where the tent intake is will do no good over time.

Beware anything labeled a "booster". Most of those CFM readings are telling you what size system they can run on, not the true CFM of the booster. You will get what you pay for when it comes to exhaust. Jolly Green has a great selection of fans to choose from.

If you go with a 200cfm fan, you could probably run a carbon filter along with air cooling hoods all in one shot. The people at the store will advise against it, but I have done it successfully before. I wouldn't cool more than one light if you run a filter, but I know those numbers work for one light and one filter.

Best of luck, and I feel your pain on the TX heat