Dear C.,
You do have a lot of changes going on, but it's not the end of the world. My son was 3 months old when we moved the first time. I know you're weening her, but I would start letting her get used to her crib now. Before all the hustle and bustle of moving starts. The new house will have new smells, etc, and she might actually find her crib a comforting place to be once you get there. Not to mention you know she'll be safe in it. If you're not already doing so, put her in her crib during the day for naps and if it's not nap time, put her in her crib while you work in her room packing her things...just to get her used to being in it.
I think working on the crib thing now, while you are weening, would make things easier than trying to wait until later.
I got both of my kids used to their cribs from the very beginning and as a result, they would literally sleep anywhere. They were happy in the bed with me if we were travelling or in a pack-n-play, or in a hotel crib. Having to sleep in one place or another was just never an issue. They're a girl and a boy, 10 years apart, and it worked for both of them. In fact, my son had 2 cribs, one in his room and one upstairs in mine. He slept in both of them. I'll never forget the first time my son rolled off the bed. It scared the heck out of me! He was a little roller. It didn't matter how big the bed was, he would wiggle and scoot and cover every inch of it in his sleep. He actually slept better in a crib where there wasn't quite as much ground to cover.
In my opinion, you can get a 3 week head start on things if you begin the crib transition now.
I wish you the best!