Same here with the LED lights. I ordered 2 T10s and just tonight ordered a 3rd T10 to round out the cages for what I got now. Now I have an extra Proline 48x24x14 which i'm not sure what I will do with it. Might put something else in it or sell it on CL and order another AP cage if needed. I was going to do the LED lights but opted to just order the ones from RBI along with the RHPs. The Proline has a Pro Products PH3 in it now but I want to try the RBI ones. Otherwise I did the same set up, glass sliding doors, locks but I did shelves in all of mine as my BP loves to climb around at night. Are the LEDs that AP mount in there sealed in place? I was thinking the exact thing of "what happens if they fizzle out?" Am I going to have to literally hack the roof of the cage apart to get them out to replace them.