I was finally able to get my T10's stacked on the cart I made for them. IMHO it doesn't look too bad. Long process but worth it as I wanted the ability to get behind the enclosures if need be.
I used 1" black pipe and casters I bought online from an amazing company (https://casterconnection.com/) with customer service almost as good as Ali at AP, and lumber from Home Depot.
Not the best pictures as I just use my phone but here goes.....
With the T10's.....(Sauzo it worked!!! LOL)
I know I need to tidy up the wires once everything is good to go and get a better camera LOL Just need to get the substrate in them and ensure heat and humidity are stable and move the snakes in. Only thing I see missing (besides snakes in enclosures) is 1 more T10 to complete the stack....yes, I did measure and build it for that addition LOL