I have a 2.3 too. Just buy the hitch and be shure to have your brakes on perfect shape (shoes, discs, drums). Drive slow make long acceleration ramp ups same for braking. The 4 banger will make it.
I wont recomend a trailer instead of a dolly, this would add more Gross weight to the load. Keep the ranger and neon as light as possible (no extra baggage, tools , spare parts ...)