We bought a Boaphile rack system for our babies and it was a huge step up in terms of ease of care. It arrived pre-wired with Flexwatt and in good condition. I currently have a baby Boa and a baby Retic in it but the Retic will have to be moved in about a year (rough guess) to a larger enclosure.

More than likely I will go with a Boaphile cage again as they are worth the price imo and I just don't trust myself to build something that would be able to provide all my snake's needs and be durable as well.