Well I completely agree with all the tractor recommendations. Getting your first tractor is a great thing, and I will never be without one the rest of my life.
I haul a 5x8 trailer off a rear draw bar, 42" bucket forks on, saws, fuel, oil, PPE, saw box, cables, chain, in the bucket. unload the bucket, unhook the trailer and gear up. Go to my selected tree and drop it, might use a rope or cable to the tractor might not. Start limbing tossing the brush aside, throwing burnable limbs in the trailer. When it looks like I got a pinch, I get my bucket forks under there to support it or hook up a chain and roll it over. Buck up the main trunk, roll it over with the tractor, finish cutting, load large round with the loader. Trailer is full, hookup and drag it home,than manual unload it. Then go back for more. Push the brush into a pile gets most of it, but still some manual work to do a good job. I can get 2 or 3 good loads within 8 hours by myself this way taking breaks after I unload at the house. Once I get me a dump trailer I should be able to double that. Two good trailer loads is one cord, maybe a little more, with the 80 cuft. trailer.
I use my ATV's to select and mark trees. My largest '00 honda 450 4x4, works hard to pull my loaded 8' trailer, I don't think it would pull a 12' or 16' trailer loaded with wood and it certaily wouldn't stop it. That's one strong 350 you got their.
I wife will ride her ATV over sometimes to help or bring me drink or complain that I didn't answer my cell again.
Good luck in your search