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The CMS system is transportable, foldable and you can replace modules with router/circular saw or belt sander. All of which can operate on their own. It has a sliding carriage so functions as a mitre.
You don't want to cut 8x4 sheets on it though, that's for the track saw. It's good for trim and smaller pieces. Really depends on what you are thinking of doing but it's a great alternative to the foldable wheelie ones from the other main manufacturers. I think Triton do a similar system.
Otherwise the big units that Hovis mentions are mostly for static use, unless you are setting up a permanent workshop I'm not sure how useful they would be.
Given your huge disposable income you should consider the Festool CMS system. I've had one for 15 years and it's pretty decent.