For a 30 mile trip, I agree doing it yourself is reasonable. I absolutely do not trust furniture moving companies or freight companies: they do not have a clue how to secure the C-arm inside the truck nor understand the delicacy of the I/I or beam, and tend to bang C-arms around. You will not be able to insure the C-arm through freight companies- the amount of insurance available through their companies does not come close to repair or replacement. Some of the companies require you to completely enclose the C-arm in a padded crate that must be built around the C-arm, usually once it is outside the building, before they will load it. Most of the freight trucks do not have air shocks, and they hit every pothole in the road on the way to your destination.
If you do elect to do it yourself, have plenty of help to get it in and out of the buildings and truck, use ramps (sometimes you have to build your own out of 2x4s and plywood), and pad the C-arm heavily, with multiple ties to the rings inside the trucks to assure it does not travel. It is best to secure both the C and the base separately since securing one but not the other may result in the C-arm traveling or falling over.