I don't see any problem with tiles as long as you can get the temps correct. Cleaning would need to be done with diligence as any waste just sits there, if you have bearded Dragons you understand that. There are many ideas about substrates (similar debates to dragons) A handful of wood products (cyprus and aspen being the big two, Melaleuca being a third one but harder to find) There are coconut product (my personal fav) and paper types (brown, newspaper) I find them to be more work. Then there are paper product ones (care fresh) as well, each has advantages and disadvantages, every keeper has their issues they need to solve in my case tile would not work as the humidity is low but in your case it very might work really well as you don't share my humidity issues.