First of all, welcome aboard, and congrats on the baby. -Grins.-

Second, I am going to try and help you as much as possible, without having you spend a lot of money.

Do you have a thermostat for those UTH(Under Tank Heater)s? You'll need one.
That forty gallon glass tank is WAY too big for a snake that size. If I were you, and I'm not, I'd run to Wally World, pick up a 5 to 15 quart sterilite/rubbermaid/iris tub with the locking lid. Put the UTHs on the bottom(underneath) of the tub and hook those into a thermostat. Zoo Med makes a cheap thermostat that's pretty easy to use; it won't break the bank and works pretty great. While you're at Wally World, please pick up an Acu-Rite thermometer/Hygrometer if you haven't already. Place the probe of said thermometer on the inside of the enclosure right above the UTHs. I use newspaper as a substrate. It's easy to clean, easy to find, and easy to toss. And HEY! You're recycling!

You should be able to keep that enclosure almost everywhere, save, perhaps a garage. You can regulate and change the temps of the UTH to suit the temps of the room you've got your Scooby in. Hope this helps. I'm sure there are others here who can help you with the glass, but I usually don't bother with glass. The humidity issues with glass are too much of a pain for me, and all of my snakes love their tubs and/or rack.