737 seeding tool, 10" sweeps,, 44'  all worked ground,  mostly flood irrigated, have to corrigate the flood  after seeding.   
 Agrominist talked me into a airseeder because of the savings on banding P & K  will pay for this drill in 1 yr just on 900 acres .

 8520 seems to have enough power & traction to handle the drill even on the steeper hills . Riding on 710s w 1400# rear weights.  This ground is VERY abrasive so you want to keep speed down, new set of sweeps might last 900 acres.