Hey everyone!

I've had my corn snake for about a year and I'm picking up a ball python tomorrow! She's about 2ft-2.5ft (over a year old).

I have a few questions to be answered though...

Basically I need help with everything.. I've done research but every site says something different. I'm getting either a 20 long or 30 tank tomorrow.. along with all the other supplies. I need to know: 1. Whether i should get 20 long or 30ft? 2. Is aspen the best substrate? 3. Heating?? (Lamp or heating pad) 4. and how to control the humidity for them? (for my corn ive never done anything for humidity.. shes been fine.. i guess its because its already humid enough here in florida)

and thats about it!

Thank you so much!