For doing a lot of 3pt level work, the JD would be better, as it has position control.
I can't really see the pictures, they show up HUGE, on my screen, but I believe the box blade is better, for doing the type of work you're looking at. I considered the box and the rear. I went with the rear because it can do nearly everything the box can, even if less efficiently. The box has scarifiers, which the rear blade cannot duplicate.
Everyone I know who has a box blade just uses it on their gravel driveways. They don't seem overly impressed with it, for snow removal or other dirt work. The beauty of the rear blade is being able to angle it. That's where it makes magic. Where I went wrong is not getting the tilt option. THAT is the rear blade to get. My next one will have tilt or I might try to fabricate a tilt, for this lightweight blade.
There are a lot of threads on here, comparing the two. Take others' advice, over mine, in this regard. I've never used a box blade.
Of course, you can use your tractor to do the dirt work. I don't know what your soil is like, but I have terrible clay, here, and can do some pretty good digging. When I get some more experience, I'll really be able to knock it out. In learning terms, I'm still playing basketball with those hoops you hang on your bedroom door.
The beauty of learning to do it on your own land, is you already know how disappointed you'll be, when you screw up and how proud you'll be, when you fix it. Plus, yours is nice and open. Nothing to run into. There's no way I would pay someone to do something I could do with my tractor, unless it was time sensitive and my tractor would take too long or I already messed it up beyond my ability to fix it. You don't learn half as much by watching as you do by doing. Start with YouTube videos or find someone who does have experience, if you aren't the "wing it" type.
As was stated, be careful digging. In KS, we have OneCall, aka DigSafe, aka 811. It's a group of a lot of the utility companies and providers, who will come mark the property, so you can choose what's going to go where. I'm sure your area has something similar. If they do, make sure you get a list of the companies they work with and the companies, in your area. Fortunately, EVERY company in my town is on KS list. In the County, there is one company I have to call, independently (it's a small power company). On top of that, I also carry an independent liability policy with specific coverage for digging. Mine is a commercial policy as I would like others to pay for my tractor and enjoy the tax write-offs. With tractors, **** near everything is deductible. It's my first year, ask me again, in April, how that worked out.
