We had a central vacuum when I was a kid, and we hated it. The best use for a central vacuum system is to rip out the vacuum and use all the tubes as conduit for wiring. I guess that's really very much a matter of opinion. In any case, be sure you test one out before insisting on putting one in. I would much rather spend my money on a good Dyson (though I understand some people not wanting to lug around that much weight or relocate the bulk of the noise).
You also missed it on the power in the garage. You want 50A, not 30A. You can download the recommended installation guide from Tesla for a NEMA 14-50; use that and you should be good for anything. It's always better to overspec and then not need it than to underspec and have to go fix it.
Another item to put in the garage is in-wall wires for the garage door sensors. If you're putting in a garage door opener, it requires wires from infrared sensors to the motor so that it stops closing if something is in the way. It's simple enough to put those wires in the wall if you do it first.
Speaking of garage doors, you can get some really great openers. My in-laws got some professional Lift-Master openers that are absolutely silent. That's nothing like what you get when you buy your own at Lowes Depot. (They even have some that attach directly to the torsion rod if you have that kind of door, so there's nothing overhead.)