new snake owner!!! need enclosure info!!

[Taylor1992]

okay so my bf and I just got a small ball python. He/she is about a foot and a half if that. Still too young to determine if it is a girl or boy. Well we have a pretty basic set up. 20 gal tank with aspen shavings as bedding, an infrared heat lamp (50 watt), a heavy duty screen top a hollowed out log inside in the middle, a climbing limb under the light, and a water bowl/container on the far side from the lamp. we do not have a humidity or temperature gauge in there yet and from reading i am assuming we may need one. The enclosure is sitting up on out dresser to keep it off of the floor. WE have a separate feeding container with a lid and a small opening for hanging the food in the container with tongs. any suggestions?