housing snakes together is not a great idea especially with out TONS of experience. The tank I would suggest side turning it this solves the tank issues if you have already spent the cash on it. It could be easily divided side turned as well. Open tops oddly do not vent as well as you would expect and they allow heat and humidity to escape. Custom designed are made to deal with both issues. Glass has the advantages of being super easy to clean and clean completely.
http://ball-pythons.net/forums/showt...arium-Solution