I really want to get a beardie (again.. it's been 14 years since I last had any) but am tight on room. Is it possible to have a 2 floor vivarium for a bearded dragon? as in I want to transform an arboreal vivarium that Is 2 ft x 2 ft x 3ft 6 high by putting a shelf in with a ramp to the second level, with a heat lamp and uv tube in the top level and perhaps a heat mat on the ground level. Please offer constructive advice?