Is he going to shed?

[Mangled Calamity]

I cant see anything in the pic, so can't help there. But, at that age a shed should be coming up any time now if he's eating appropriately sized meals weekly.

Also, I'm not sure what exactly "90+" means for your hot side temps, but 90 should be the max.

It typically is but due to my room being in direct line with the sunlight it can get a little warmer.
Never goes above 93 from what I've seen on my days off.
Especially now that the cold season has hit.