75 gal is way to big for a baby ball python... a 10 gal or a 15 qt tub would probably be better. here is a caresheet to help get you started : http://www.ball-pythons.net/modules....warticle&id=59

and your cool side is pretty low, you want 82-84 on your cool side.

also i large hide will not really help a baby they want a very tight space to hide in. here is a nice thread to show you how small they like their hides.
http://www.ball-pythons.net/forums/s...ight=hide+size

also you mentioned a night drop in temps. really that is not necessary unless you are breeding ball pythons.

also i would recommend getting a thermostat for your under tank heater(UTH). this will control the temp of the UTH because they can spike to very unhealthy temps. a cheaper but less reliable alternative is a rheostat, or a lamp dimmer which can be bought at home depot. the thermostat can be bought online. try reptilebasics.com, Rich is a great guy and will set you up.

i hope some if this helps you out. if you need anything else please don't hesitate to ask.