Having started this thread, I guess I'm about where I was in the first place. I thought it possible that there was some binary distinction, like FELs have to be "dig rated" or "pile rated" and I just didn't know where to look. But it's about like I was figuring when I did a big project this past summer and early fall. Well, big for me -- remember, I'm pretty small change.
I bought my spouse a greenhouse, 14' long and 8' wide, that was delivered on a car carrier type truck with a flat bed that tilts and extends/retracts. It had an open bottom and I had to prepare a site for it. It was going to go next to the pole barn which is open on one long side and closed on the others. Regrettably, the pole barn was sited such that the gentle slope goes into the barn, so heavy rain would run in there. I used my FEL to scrape and lower the soil in front of the barn, so now there's a slight slope going out of the barn and the rain doesn't run in any more. I used this soil to build up the site for the greenhouse. I piled it and shaped it and wheelrolled it to densify it, then I made a perimeter base out of 2 layers of PT 2X6 with heavy waterproofing. I poured a pretty crushed stone she liked into this base, a bag at a time from Lowes, and I think I wound up using 40 or 50 bags, more than I expected. I brought them 11 bags at a time from the store in my station wagon on my plastic pallet, and used my pallet forks to carry the pallet from the car to the site, reaching over the site so I could drag and drop the bags (which are beyond my personal lifting limit). I also set 14 square stones into the crushed stone, again from the pallet forks.
What I learned during this process is that it's quite difficult to get my bucket to bite into my soil, a horrible mix of bank gravel and clay. I used my TSC ripper/subsoiler to break it up a bit first. It took many hours to get all this the way I wanted it, mostly because I was just learning as I went, but also because this was difficult soil for my CUT. There were also big tree roots in a few spots that required loads of elbow grease and usually some pulling to remove so they wouldn't totally stop the blade. I think it might have been worthwhile to get a tooth bar. But what would have been better would have been a box blade, with scarifiers, so I could drag up piles and then FEL them into place. Though, I don't know where else I would use a box blade. If I think of one more job of this size that would benefit from one, I'll get one, but I don't predict that will happen.
I worked slowly. I think it's really hard on equipment to get a running start and collide with the project, using the machine momentum to get a bigger bite, and I don't do that. I moved slowly, not least because I'm just learning and I'm not all that coordinated to begin with. I was guessing I was OK with this approach, and I still think I am. Certainly, nothing seemed to break or look different after the job was done. But if I went into business leveling pole barn approaches and creating greenhouse sites, I would definitely get a bigger machine. And I'm not going into business.