Bushhogging a steep pond levee

I want to bushhog a pond levee that has about a 40 degree slope , it's about 1/4 mile in length. I've bushhogged it before with my old 806 international and a 15 foot batwing bushhog but now I have a new 4 wheel drive John deere, 100 h.p. engine, 85 p.t.o. h.p. I've spread the front and rear wheels as wide as possible and I'm gonna fill the tires half full of water before I get on the levee. I failed to mention the J.D. was kinda tippy before I widened its stance. I don't wanna flip my new tractor before I make a payment on it. Any suggestions ?

 

Bushhogging a steep pond levee