I don't really know why you have a 55 gallon for a ball python.. that is ridiculously large..

In order to heat that, you would need 2-3 UTH's or 2-3 Heat lamps. Ball pythons hide in hides, so they don't get the heat from the lamps as efficiently.. so they are virtually useless as a heat source. You need UTH's of some type.

I don't know how humidity won't be a problem in that large of a cage.