You didn't ask for suggestion for flipping the table, but we had a thread here about doing that. I have one idea and that is to use the base you already have as the assembly table. Make a sub-support with cross members on it to keep it nice and to give more support for the planks when gluing them together. Once it's all together and one surface is flat, now is "flipping time".
One suggestion was to attach a pipe stub on each end with a corresponding receiver and legs to alllow it to rotate. You would need to pull the table support out from under it to make room for it to rotate, but that should be fairly easy. Then move it back under after it's rotated.
Another suggestion is an engine hoist aka cherry picker to lift it from one side enough to rotate it, removing the support table as you lift. If you have overhead beams, a chain fall will lift it with a proper sling arrangement.
OOOPs! I see that we have already discussed how to do this in YOUR other earlier thread! So, disregard my suggestions above if you have got this figured out! And do take some photos for us the see the method.
OOOOps no. 2. I see that this is the very table you were building back then and asking for "flipping" suggestions. LOL
I like the idea of a rotisserie using one continuous 2" pipe and supports at either end, maybe some stout saw horses. Attaching the pipe would be the only concern so it won't slip.