Also maybe not too helpful but twice in late 2016 and middle of 2017 I had occasion to help ship a 27' Airstream TT, first from TN to Columbus OH then from Columbus to a ship in Baltimore. Both instances had been arranged through UShip by the Airstream's owner who lives in Denmark.
Things went very smoothly, both drivers were on time, went a bit over and beyond expectations as far as just dragging something from here to there, the TT arriving at each destination on time and damage free.
If someone here has direct experience with this sort of service whose also a member here they'd be my first choice. Otherwise I'd look through UShip for a highly rated service---nothing speaks louder than first-hand experience.
BTW would love to see this project progress---sounds interesting!