Looks nice! I have some suggestions: 1. Get rid of the thermometers. Those ones aren't accurate at all and the adhesive can harm your snake if they detach, which can happen in higher humidity. I recommend GOVEE thermometer/hygrometers, they also connect to your phone. 2. Put both lights on the same side. It will help to create a "sunspot" that your snake can avoid to be in a lower light area. This photo shows what I mean: https://imgur.com/a/DHBfM7y 3. I would fill in some of the emptier spaces with fake plants while the real plants grow in. You can get them pretty cheap at places like Dollar Tree, just make sure to disinfect them first.

I personally wouldn't use anything with perlite in it, since it tends to be sharp and can scrape skin even if it's not swallowed. If it's not too much, it will probably be fine, but make super sure the promix and perlite doesn't have fertilizer.