Just thinking outside the box after reading all the posts. It sounds like the place you’re in suits you for the most part. Seems very disruptive to move a family w/a kid on the way, no less, into the uncertainty of rentals and unknown real estate market.
I have to agree w/others that 2000sf is plenty big. If the wife is the one wanting more rooms, well, how about expanding, then. Room on the lot to add a room or add up? Construction costs seem to be lower now. That might be an option. It sounds like you’ve done some work on the place (yourself?) Maybe you can do the finish and save that way. Get someone to do sticks and bricks on it.