Congratulations on your first snake.
Have you considered a PVC enclosure or are you set on an aquarium style tank?
I'm new to snakes as well and find the majority of folks with tanks, myself included, have humidity issues and have to tweek things to get it right. (ie. foil or some other method of covering the screen but not too much or the humidity will be too high, but just enough to hopefully regulate it properly)
Conversely, the owners with PVC enclosures rarely talk about humidity problems.
This just my opinion, not the rule. Good luck.