Lots of good advice here. I have 10 acres of wooded land with about 1/4 to 1/2 mile of trails. I have a B2620 (a small B, the B2601 is the new version/number). As a tractor it is good. But, my property is sloped and some of the trails have some side slope to them (at least 10 degrees). Going over it once, slowly is no problem. Transporting 10 yards of material across it is not fun.
Yes, I can fix that with the tractor and I did some and will do more. Similarly, the trail is relatively narrow and serpentine. I could fix that too, but my wife would not be happy about that. The trail is 6-9 feet wide in most places. My wife would prefer it was less than 4 feet hide. She say it should be a horse trail. I say that isn't a big enough of a defensible area. If I need to bring material to the middle of a trail section, I need to either back up to the start of move forward to the next area that is wide enough to turn around. The last time I moved chips, I found it easier to use a cart and my lawn tractor to move it. It holds about 3 or 4 bucket fulls and that made it faster than using the tractor directly.
With that much area, you will want a chipper. Don't fool around with one that doesn't have hydraulic feed. I have a Vermeer BC625A. I like it, but the tree professionals sneer at Vermeer. They like Brush Bandit much better. I have to agree I would like one better too, but wouldn't want to have to pay for it.
If you want to be selective about how you maintain your trails, you will need a brush cutter. I have a Stihl FS130 (replaced by the FS131 now). They also make the Kombi System, which I think might be a good idea. I also have The FS94, which is a much better string trimmer. The 130 has too much torque and breaks string all the time. I don't have that problem with the FS94. I use a carbide blade when I don't need too much precision. I use the power scythe head when I need/want precise cuts. If you don't care about the look, a flail mower might work fine. Some people like tractor clearing. There are a few choices of additions that will help with that.
QA for the loader is something I have and have never used (11+ years). Last year I bought QA for the bucket. I should not have waited a decade to do that. I also have a grapple. It needs a third function valve/remote up front to power it. I don't use it often, but it does things easily that would be really hard without it. I also got pallet forks. I had the bucket ones before. They work okay, but very limited visibility. The forks were expensive, but I don't think about how much I paid for them anymore and I have only used them about 3-4 times. The jobs I did would have been really hard without the forks.
My point for all of this is, the price of the tractor is the down payment. You will need implements and you will need many of them. Make sure you plan for that, or you will have a very expensive and capable tractor that won't be able to do much of what you need done. I got my tractor to move compost. It didn't need anything other that the loader to do that. So, I waited to get the other things: grading scraper was first. It is much easier to use than a box scraper.