Your studio is plenty hot enough. There is neither magic nor mystery with the 105 degree figure. It’s a newish ‘fad’ to quote it. Your studio is plenty hot enough. Work on a general rule of aiming for body temperature. And really 105 is an upper limit and gives absolutely no margin of safety for the body.
Humidity levels are good from 30 up. You’ll find that generally speaking 40 - 60 makes for a satisfying sweat.
Imagine how much more environmentally friendly your studio can be by using naturally available heat! Lucky you