I don't have a orange tractor, but I do have a 10' cutter. My 70HP is pretty good with it, but my 85HP handles it better in heavy cutting. According to TractorData.com, you have 61 HP. That should be adequate, but certainly not over-powered.
Couple Q's.
Is it a 3PH, semi-mount, or pull type? I don't know if your tractor weighs enough to safely handle the 3PH. You might get by ok with the semi-mount, but pull type would be best.
What are you going to be cutting? If you're just clipping the top of a grazing pasture, that's quite different from bush hogging weeds and brush that are as tall as your tractor hood.
And just an observation. I personally won't ever buy a "medium" duty anything again. Several years ago, I bought a "medium" duty 7' Rhino. I ruined the tail wheel on it the second time I used it. (backing into a creek channel) Dealer said that was "abuse," so I was left to fix a brand new cutter on my own. I put a "Heavy" duty tail wheel on it, and haven't had any more problems. JMHO