JJ,
there is no question in my mind that this whole tractor/PT thing is COMPLETELY, ECONOMICALLY UNSOUND!!!
It would be much cheaper to hire out the brush clearing, road maintenance, trenching, stock pond excavation, etc, etc
BUT...
I WANT A TRACTOR!!!
With regards to the lawn irrigation, right now my water softener is in the well house. To water my lawn, flowers, tomatoes, I have to switch the manual bypass in the well-house. Not hard, but is seems I'm always leaving it in the wrong setting (soft water in the drip irrigation for my tomatoes, hard water burning out my water heater, no salt because I ran the yard sprinkler with the softener engaged). Right now, I just want a couple of spigots with dedicated, untreated well-water.