Biggest root ball you can manage and keep it damp you MIGHT have a chance.
Sounds like you are impatient ... why not plant a new one of more when you are at the new place?
Not really impatient, I plan on planting plenty at my new place, I just figured I could transplant the one I just planted this spring to another property where I already have a bunch of trees going. I lost a chestnut crab this year and this one would fill that spot nicely. I mean I'm 100% losing it when I move, so might as well take a chance and try to transplant. Worse case scenario is it doesn't take and I still lose it.
I've found that crabs on Antonovka produce much quicker than regular apple varieties.