Please don't take this the wrong way. Borrow or rent a 30-35 hp tractor with a two row disk, for the weekend, and save the life of your Pioneer. We put in 22 one acre food plots in one weekend with two Kubota 32 hp 4X4 tractors. One was disking and the other was planting. The Pioneer was not designed to pull that much resistance for any length of time. It will pull a drag pretty good but it will stress the cooling system.
#NTC