Obviously you need both a Carpet and a Boa. That's what I decided, and I've not regretted it for a second! I'm not sure I should hold myself up as a positive example, lol, but given the number of snake species and subspecies that interest me, I've done a pretty good job of restraining myself.
I'm in 100% agreement here!
Boas and carpets fill the bill.
My lighting setup is just an LED strip light that can change multiple colors.
I stapled it to the top of the cage. It's the same system I used for the previously housed retic.