FWIW, I have a B7100DT. That's 16 hp at the engine, 48" wb., 48" width, and about 1250 lb with loader. Gear drive, Ag tires, loaded. I live on a pretty well sloped piece of woods with a curved gravel driveway about 800 feet long plus another 5 or 600 feet running up to and through the barn and barnyard. In addition to the loader which never comes off, I have a 6' rear blade and a 4' bush hog style mower marketed by TSC under their Huskee brand.
I have used this little tractor, with two people sitting in the bucket to keep the front end down, to haul a 16' tandem trailer loaded with green lumber up the driveway when my pickup would only sit and spin. The loaded trailer was probably in the 3000 lb range since empty it weighs just about 1000. The trailer load in question was enough to twist the factory bumper hitch on my truck about 15 degrees out of square. The driveway in question was, at that time, built like a ski jump in reverse. People who didn't hit the hill just in front of the garage with a fair amount of momentum, even in summer, would fairly often not make it on the first try. A box truck delivering a new freezer could not make the hill, but sat and spun on the gravel.
I also use it to clear snow, sometimes resorting to the loader when the stuff is so heavy it pushes the tractor around. Sometimes I use an old Cadet to move the snow, too. We get snow up to about 20 inches here during the worst storm of any given winter.
I have used the bush hog with some success, but it's slow. I use second gear out of 6, the second of 3 pto speeds, and lift or lower the 3 point as needed to keep the blade speed up. Mostly I mow multiflora clumps and woodsy undergrowth with it. I usually have to mash the multiflora down with the loader before driving the hog over it. The tractor thinks its on vacation if I just mow grassy stuff.
I have had it in multiflora/blackberry tangles thick and large enough to hold the entire rig about 3 or 4 feet off the ground, but that particular little chore stripped the splines on the lift arm, allowing the tractor to tilt about 30 degrees while the hog was about 30 degrees the other way. I managed to disconnect the hog, -- not fun when in the middle of a 10 or 12 foot high briar patch -- drive the tractor over the multiflora and out of the tangle, then drag the hog out with a chain and the loader. It was a LONG 3/4 mile drive back to the trailer that time.
I think the
B3030 will suit your needs just fine. It has plenty of power, and if you need weights, I'd suggest wheel weights over loaded tires for reasons I detailed in another thread. I know they cost more, but you will get a better ride and be far more when driving over obstacles. I would also suggest R4 tires. The turning radius and generally smaller size will make the tractor handier to use than the physically larger L. Make sure the seat works for you. I find the newer Kubota seats have a forward tilt to them that would be unnerving on a downhill. Of course, aftermarket seats can be had for anywhere from 50 to $500 or more, depending on what you want, so don't let the seat dissuade from a particular machine.