To add a bit to the maneuvering issue....larger Class C's have a good bit of body overhang behind the rear axle. Consider that swing effect when pulling away from things like gas pumps and turning at the same time. Those concrete filled posts that protect the gas pumps do a very good job. You know how they say...don't ask how I know.
Otherwise jump in the big one and git on down the road. By the end of the first day ain't nothing to it.