I think you could do it and I would start with a full set of spare tires, after all those on the baler are 4 years old. The baler is heavy on the drivers side so that tire will wear faster than the other one but 55 MPH should be no problem for a new tire and properly greased and adjusted axle bearings.
NOW as to it being cost effective to make an 1800 mile trip to get it, if would need to be really cheap. Lets just use the government approved deduction of 45cents per mile(I think that is right, may be a little more now) write off for mileage expense = $810 plus meals and hotel. It could be done in 2 very long days but maybe add one day on the return so 3 nights of hotel @ $100 per nigh (300) plus 9 meals @ even $15 per meal =$135 per my figures will cost you roughly $1250 to get it back assuming no tire blow outs and no new tires.
You would almost have to get it free to justify the cost of transport.