Still looking around, have decided on 45 hp minimum, with a base, non-additional weight of at least 4000 lbs. Also considering keeping the two tractors we already have, and adding a skid steer with bucket.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.