Jeff,
Any of the GSO/SkyWatcher Dobsonians will do. They all come out of the GSO factory and are rebadged.
You mention you will be transporting the scope. You will need to invest in collimation tools to sort the optics out after every move. Look in the how to section, I am sure there are tutorials on how to collimate and what tools are required. I am a refractor person (imager; visual -- what's that?!) so can't help there.
An Argo Navis should be high on your list of accessories as it will enable you to view the sky efficiently. Put aside about a grand for it. Gary Kopff is the director of Wildcard Innovations and also a very active member of this forum who will be able to answer any queries you may have. His username is gary. Check out the equipment forum for Argo Navis-related posts.
Hope this helps in some way. Welcome to IceInSpace.
Cheers.
Regards,
Humayun