I would try running the mill around on a pallet jack before they load it so you can get a feel for the weight. It is not a fun feeling to be halfway unloaded when you realize you may have underestimated the effects of the weight. Bad enough with 300lbs, 2000lbs is pretty unforgiving.
You may find the pallet jack perfectly capable, or you may start to look into renting a forklift at your end.