This looks to be a configuration that you intend to remain in position rather than fold up. If that's the case, know that the MFTs' rubber feet will deform after a time -- especially the adjustable feet. It would be far better to have adjustable feet -- and much better feet -- at each leg, not just the one per table.
I think that you would be much better off making your own base that is more of a single unit than starting from multiple MFTs. That way you eliminate any alignment and leveling issues that you would have otherwise. Search for jumbo MFTs here for plenty of good examples.