I was going to say a tractor that size and that much weight on a pallet, youre right at the limit for an evenly distributed moment of 42” to 0”.
Say i have a pallet of 50 bags of pellets (2000 lbs) as i just recently did this this fall: removed 25 bags thinking eh 1000 lbs no problem evenly distributed. Tractor wouldnt even think about lifting it.
That same 1000 lbs if stacked as close to the pivot as possible could be lifted. It can lift the weight, just not if the moment exceeded say
2’ or so. At that point youre playing tetris though so its easier to just find what it will lift and make another trip