First of all i wish you the best of luck in your new venture and it sounds like you have put a lot of thought into you caging. That shows you are looking to have the highest level of success. However i don't recommend using Exo Terra cages for chondros. They don't hold heat or humidity well do to the top venting this brand uses. if you use this brand i recommend modifying it to suit your animals a little better. If possible i would try to build your own cage using rear or side venting. this will help hold heat and humidity. I'm not an expert but i have made the same mistakes already. Good luck.