That looks great. I am sure you will get lots of use out of it, as grapples are the most useful implement on a tractor in my opinion.
Now to stir up a debate. I use mine mostly for clearing trees and large overgrown bushes (what we call privey hedge around here) I approach a tree, say up to 8 inches in diameter, hit it high and push it over as best I can. Of course some trees are just too well rooted or just too big for my tractor (a M 6800 weighing close to 8000 lbs) You will develop a feel for which ones can be uprooted. I then back up, plunge the teeth under the root ball and curl as I push forward. If all works well, the root ball is plucked from the ground. Pick it up and carry it to a pile. Now in my experience a wide grapple like yours may be great for clearing brush but is too wide for plucking trees like I described. Even with my 48", stubborn trees require me to use the corner of my grapple or just two teeth to dig and break the roots. Sometimes I have to work around the tree digging and breaking roots almost like using a backhoe, before it will finally surrender. I think a wide grapple on a CUT cannot focus the pressure with enough force to uproot, because tractors just don't have to power in the FEL to do that. Now I think a wider grapple would do just fine (or even better than a narrower one) if you are clearing small stuff. You can tilt forward, sink the teeth a couple of inches and drive forward skimming the ground and clearing the growth and uprooting bushes and saplings. But for uprooting larger trees, the 48" will work better. I have pushed down many hundreds and developed this into an art! Some of you will disagree and profess the superiority of a wide one, but this is my opinion after using extensively for three years. But any grapple is better than no grapple!! They are fun to use.