Finally, WRT engine rotation--someone said check to see which way the engine would turn to pull air past the radiator. I believe on my tractor the fan pushes air forward through the radiator, rather than pulling it through like on a car. I believe most heavy equipment works this way to help clear dust and debris from the front of the radiator. I learned this when I was doing some clearing years and years ago and the dozer operator parked his dozer right up by the fire so the engine fan would blow air on the fire to keep it going.
My MX5100 draws air through the radiater as there is debris on the front screen.
Took the new to me JD3005 with a 300 fel for a quick drive on daughters pasture. I have mowed it with old 1010 for 11 years. It is not level, but not too hilly. I did not feel at ease like I do with the old tractor. tires are loaded, and the largest for that model. Does heavy ballast at the 3PH stabilize them sideways???
A long implement, like a rotary cutter, would not be good ballast...too much weight too far out. You don't want to use any implement that extends too far.