You can purchase an Accurrite Hygrometer at Walmarts for like $12.00 - this will allow you to monitor the hot side and the cool side temps plus humidity levels.

Sounds like the other stuff you have will suffice. You can add damp spaghum moss to the tank if you are having issues with keeping the humidity at a 50% range.

Thank you for taking this little guy in - I'm sure you will give him a good forever home.

Best of luck to you.