NP... I decided to go with the sliding glass doors - just because they seemed convenient and were on sale.
With this setup, I am also dabbling in a naturalistic environment. I am going to try and achieve a BSS (Bioactive Substrate System). I have a small little layer of aquarium pebbles below about 2-3 inches of peat-moss / coconut fiber mix - with a top layer of repti-bark because my BPs really seem to like the repti-bark.
The idea behind a BSS is that you obtain a bioactive system which is beneficial and helps in the cleaning process - i.e. you don't have to clean the cage out nearly as often - as the bacteria helps keep fungi / mold under control. We'll see how it goes...