First off, take a deep breath. You'd be surprised how well BPs put up with bad keepers, and you're doing your homework so you can't be that badWhat type of setup have you decided on for your baby? This can help decide what substrate and heating you'll need. I use aspen and coconut fiber for tank setups due to the low humidity, in addition to humid hides filled with moss. For my tubs, I use paper towels because the humidity is too high with most other substrates.
As for your heating, you'll have to play with it until you find what works. Again, this will depend on your setup. If it's a tub, a single UTH may be sufficient. If you have a tank, you might have to wrap it in foam board with an UTH and a CHE. Unfortunately, you won't really know until you have your tank/tub/whatever in place and can do a dry run on temps and humidity. Hopefully this helps!!!