I finally purchased a 3 tub adult BP rack to go along with my 5 tub sub adult rack. I got both from cserpents and was able to pick up both at semi-local shows to save on shipping costs. So far I haven't had any issues with them. I just hope having them stacked (like in the photo below) won't cause any issues.
If anyone is considering Cserpents racks, I would say they're a good company to buy from. I am certainly happy with mine.
Omg thanks for posting this. These are the exact racks I want. The hard part is which one do I start of with. I'm kind of leaning towards the sub adult 5 drawer rack.