All right! Congrats! Though maybe stating the obvious: that will be a life changer!
Talking from experience; very happy that despite having two of those clones running around meanwhile, I still kept the Z4. It gives me a chance of having some 100% me-time every now and then, as the wife and the clones cannot be squeezed in it together.

:?
But of course, as you rightfully state; in order to go for that scenario, circumstances (such as a decent spot to keep it) should cater for that... If they don't there's plenty of nice, sporty, modifiable family cars to look out for! But then make my expert-tip would be: be sure you create some me-time in a different way.
Nevertheless and most importantly: congrats and do enjoy (which you definitely will)! I can ensure you: clones will be confrontational, as they mimic your own behavior at least the first few years ...