I use Sterilite 1960 tubs (almost identical to the Iris CB-70) for my larger snakes. They are alot easier to get at a local store (i.e. Walmart or Target) than the Iris CB-70 tubs. If you want to conserve a little space, I say go for a two tub rack. It would not hurt anything. As for the heating and thermostat, shoot Matt(justcage on bp.net) at www.mgreptiles.com an email or phone call and he will make sure you are getting the good stuff.