New ball python owner asking for advice asap?

Sorry for the confusion but It looks more likely that I'm keeping it now.
I'll order a digital thermostat,hygrometer and thermometers as soon as possible.
I've turned off all lights so the temperature from what I gather is closer to 30 whilst the humidity is still varying.

If you can return some of the wrong stuff to the pet store, that will help with affordability. It doesn't cost that much to set up a proper enclosure---the setups the pet store sell cost way more!---but of course if you get the wrong stuff the first time and then still have to get the right stuff, that definitely adds up :/.