That my friend is too high for ambient temps! 80 not 90!
The tub enclosure debate is curious I actually don't find a massive difference between cleaning the rack and enclosures. The rack takes about 1 1/2 to 2 hours to clean for 4 snakes and the enclosures are about 30 min (x4) to do. Not much of a time saving. I have a science background and that makes me a bit OCD with cleaning. The rack has the most in accessible bits ever the tubs are easy ish but snake contact area of the rack is very very slow to do and very awkward picture laying on you back scrubbing a 6 inch opening that goes as deep as you arm can reach. NOT FUN. After 3/4 of a year with the rack I am not sure of any time saving space saving but not time or heating dollars.