A good explaination of why it's wise not to enter into legal contracts without the benefit of marriage. People like to say "it's just a piece of paper", but that's short-sighted. Your post was right on target.That's absolutely true, and there are places (i.e., big cities) where home ownership is essentially impossible . . . but the OP does want a house.
Her question is really about priorities: I have this money. Should I invest in vacations or save this money for a bit and the timing is right for us to buy a house? Given that she does want to own a house, I'll vote for that option every time.
I agree with Mrs. Pete 100%. My answer would be different if the OP's goal were not owning a home. But since it is, the focus really needs to be on that. We've owned DVC since 1993. WE've had wonderful vacations, but with all the off-site villas and homes that are very affordable, I can't say I'd buy DVC right now. It's expensive.