Rear Blade Rear blade, what size? jd2305

[kljunior]

I have a jd 2305 and I am about to purchase a Midwest RB22 series blade. The only thing left to decide is, do I go with a 60" or a 72".
I wondered if anyone has tried a 72" on a 2305 or similar size tractor. My biggest concerns are, will the blade rotate 360 on the tractor, and will a full foot of width outside the tires on each side create too much side twist or torque for this size tractor?

 

[Fredex]

Torque or twist is always created when cutting with one end of the blade; longer blade would probably be worse. However, rear differential lock helps and I guess 4WD would also help (I have a 2WD machine).

Rotating the blade 180/360 is something else. Wouldn't be much worth paying for if your tractor is too small to allow it to work. That's my opinion and how I sized my rear blade.

Fred