Congrats!
What does your fiance drive? Do YOU really need the space? We have a 3yo and another due in March. The wife just got a new Town & Country, and whenever more than two of us need to go anywhere that's the vehicle. If it's just my daughter and I we take the Crossfire. I also have a '79 K5 for when the family feels like getting dirty, and a '67 Belvedere convertible for when the family needs to cruise (I would suggest getting all your toys and sleep now before the youngin')