While I love the concept, my fused together back would be killing me if I had to stoop over to reach in there all of the time to place material to carve.
What are you planning for work piece clamping? I think @alden meant th base of the box not just legs. As it is now the bottom looks like it’s just plywood and the weight of the cnc wouldn’t be supported. To make the enclosure easier to flip I would get a model of the cnc and find it’s position when it’s fully parked back.
(I read somewhere in the forum that Onefinity does not recommending storing elite series machines in the flipped up state becuase of the stepper motors, however I think parking it fully in the back would probably be fine)
Put you’re pivot points right under that position, or a bit further back to avoid having the enclosure flip while you’re machining. I would also put the pivot points on the base itself since they will need to be able to support the full wieght of the machine. I also wouldn’t be suprised if those casters you’re using allow the cart to move around while the machine is operating. I don’t know for sure though but I would get beefier ones just to be on the safe side.