Now when I think of Uhaul enclosed trailers I think of @Zeke with his story.I have 3 adults, one baby in a car seat, luggage, and whatever christmas gift we have to bring back to stuff in the car as well. If I can't break them down, which I think you're right about how they come apart, I'll rent a Uhaul trailer. Enclosed one.
Let me get them home first lol.
Also, I'm thinking the adults, luggage and all the christmas stuff should sit fine in the Uhaul trailer and the countertop displays should fit well enough in the Rogue with you and the baby.