I am someone who is against racks for a couple different reasons (limited sizes for tubs, limited methods for heating, harder to provide enough hides, etc.). However, if you choose to go with this housing option, you can get a Spyderweb Herpstat that will allow you to monitor temperatures remotely. I just got a regular Herpstat 2 because they had some available on clearance. I haven't set mine up yet but it seems nice and most keepers recommend them. Also, here's their probe placement guide for their products: https://spyderrobotics.com/index.php...666c342f66b3b1
Personally, I really regret not buying a thermostat that disconnects power when it can't get temperature down BEFORE I got my snake, but I was 13 and didn't know. Luckily he never got any burns, but it was so scary having the thermostat probe get pushed aside and then ending up with a hot spot wayyyyy over 100F. I've been using a VE stat the last couple months that I got off of facebook marketplace and I haven't had any issues with it so far either.