Moving my snake

[Nos]

So ever since my one bearded dragon passed away I've had this 46''x18''x18'' glass tank empty and I've decided to put my Ball python in it,
Right now i taped some heating wire to the bottom of the tank it keeps it around 91 but not much radiant heat, was thinking of placing it inside his enclosure. but was also thinking a ceramic heating element might be better,

What kind of heating source should i go with, a ceramic heating element or heating pad?
What should i use? and how big of a heating element would i need for a ball python if i go that way?