One thing about this size tractor is that it's still relatively transportable while being big enough to do some useful work. If you get too big of a tractor, it's not going to be easy to manuver on a trail. 4wd plus a hydrostat transmission also means you should have good control over ground speed.
Working on a trail with a tractor is a different experience than doing it by hand. When you work by hand, you've got the personal experience of being in the woods. When you involve a tractor, I think it interposes a machine between us and nature. I think you'll understand when I say I'd rather walk in the woods than ride an ATV in the woods because the experience is different. If you are there to get work done that's best done with a tractor, so be it. If you're there because you love nature and primarily want that experience, then a tractor might get in the way.