250 watt M/H grow light and a 400 watt HPS grow light

In My 39" Depth X 47" Width X 97 1/4 " Height grow closet , I have a 250 watt M/H Grow light Hooded with Enclosed Ballast ! Very warm unit. I have never had a 4oo Watt HPS Reflector with Remote Ballast. I have the Temps between 70 degrees and 80 degrees F. I want to Flower with the HPS . Will the Temp on the HPS Unit run about the same on my HPS Unit ? Getting ready to flower in the next week or two and need to make changes if it will run my temps upto 90 or at least mid 80s.

I have a 400w hps in wardrobe and I keep it high 70's low 80's with a small AC style unit and you CAN NOT shut the wardrobe door and I leave my bedroom window open. Hope this helps.