2 things to remember Green and Orange paint cost extra.

If you are serious about moving bales, feeding and stacking new tractors don't weight what the old ones do and some of the cheap in price ones are aluminum and about all of them no matter what color paint are made overseas. I'd start with looking about a 75hp model. I have a lot of seat time on a M7040 moving 5x6 bales and I wouldn't want anything less if I was planning on stacking. Older tractor is a different story they are typically heavier, much easier to fix and will keep going with about everything on it wore out or broke. A bad sensor will keep a new one in the barn.