hello im just getting into reptiles and i have a savannah monitor, in the past i owned a bearded dragon and ball python, both of whom i have to give away. i am about to order three bps, a 2014 mojave male a 2014 pastel male and a female normal. im a little short on money so i have 2 32 quart sterilites for the males, a 15 qt for the female. a total of 5 appropriately sized black hide boxes, heat mats, thermo stat, digital indoor out door accurite thermometer and cypress mulch bedding. im planning on laying the tubs horizontally on my floor with maybe some bottle caps taped to the corners to keep the heat off the wood. Is this a good set up? and i know 3 seems like alot for basically my first balls but i am ready to give these guys the best lives possible.

P.S is one thermostat good? or should i get another?
thanks