[villagetinker]

IMHO,
Before you move in take care of anything involving the floors (garage painting), carpet removal or upgrading, etc.
After that move in get yourselves settled in, sit back have a drink take deep cleansing breaths.
There are so many things that can be done that you will wear yourselves out. I have talked to people who stated that they should have waited before doing something. We did very little the first several months, and even then we held off on the big projects for almost 2 years, until we were sure what we wanted to do. Talk to your neighbors about what they did. For example when we did our birdcage, we had electric receptacles installed in the concrete pad, and 50% sunlight reducing screening in the ceiling area. Several people mentioned they wish they had thought of those items.

My point is get a feel for the area and your home, talk to people, and look over this site , and then refine what you want before you talk to the concractors.
Hope this helps.