I'll plan a trip with my family in the spring and come home with a mini van full. I plan for the fronts, rears, center and sub. Kids and my wife may have to ride on the roof, just kidding of coarse.
Actually, this may be a reality. I have a Kia Sedona and needed to take out all four back seats to fit my entire Epic 60/500 system comfortably. When I recently went up to swap my system out for the new High Gloss Cherry (Minus the sub) I left the 2 middle seats in. I had 2 M60's, 1 VP150 and 4 QS8's tightly packed in there with little room for out luggage to go up north for the weekend.
I would not plan on doing a family trip to get the speakers until you got all of the box measuments from Axiom. As well, if the wife is not really into Audio it could be a killer on the deal...
Don't worry about bringing your amp/receiver with you, this will be more hassle then anything for you and Axiom. One thing to think of is JC who works there is doing a full renovation and building the first complete Axiom demo theater that
may be finished when you go up. That would be ultra cool.