your hill sounds real steep!! when i have bush hogged with my
b7800 with loader on, i always felt better with the loader on then off, and if you were going to mow up/down with the tractor, i would recommend having the loader on. i took it off once and if the top link of the bush hog became tight goiing up hill, it easilly picked up the front of the tractor, even on slight slopes, same with the
b3200 before i put the 5 front weights on. the 5 weights made all the difference, but the loader on the other tractor helps more with front weight then the front weights did. learned that also when using my winch to skid logs. any way on to the tire chain deal, the turf tires do go better then the r4's in snow, but if you have any steepness to your snow plowing area, you probably will spin with the turfs, especially pushing anything too. my tires are 13.6-16 oversized turfs, and there is not much room for chains between the tire wall and the fender. i have not gotten chains for my
b3200 yet, but would like to if i could get the right size to fit. there is a spacer kit, but you would have to switch that back off again to fit the 60" mmm. i mowed with a z turn articulator 72" flex deck at the golf copurse i use to work at. commercial and it would climb hills like a champ, but start sliding sideways or get that thing pointed downhill, you would be in for a ride. actually did mow some of tyhe steepest parts of that course with that mower, but had to be real careful and pick and choose conditions such as if the grass was too wet or dewy, take slight up angles when mowing, and be sure there was a run out if did slide. that z turn did have agressive turfs. maybe there is a more agressive tire you could get and be safer. i don't know anyrthing about grasshoppers, so it is good dealer is comming out to see where you be mowing. just my opinion, if the z turn can handle your steep hills, i bet the
b3200 could too, provided you took the right process for each mower. if you are going side ways on hiull with tractor, leaving the loader on or off is a nother discussion. mowing up down with loader you be ok, but sideways with loader, that is another art form. maybe frontweights better for that, but wont fit with loader frame on/brush gaurd up front. at any way, stay safe and good luck.