Well, I've had Yanmars for years, like them, and have written quite a bit about them too. I'm afraid I'm going to end up telling you some things you don't want to hear. Like a lot of Yanmar afficianados, my interest began with their interesting technology back when no other manufacturer was even close to being competative in quality. In the 1960/70/early 80s, Yanmar was a private company rather than a corporation, and agricultural equipment was the owner's hobby. He could afford that since the company made their money on big ship engines. He came up with fascinating agricultural equipment including aquaculture. Heady stuff to us mechanical geeks.
But frankly 00 acres is just too much land to tend with a 30 hp tractor. I have a 33 HP 4WD Yanmar - a 12 speed, powershifting, integral powersteering, creeper geared, tractor with a full set of implements and even has ag tires and turf tires - both types mounted on their own rims. Yes, and it has the factory loader, and draft control right along with the multispeed PTO. In fact it has everything and everything works right. And yes, it is probably worth in the neighborhood of your price point. This 33 hp YM336D was and still is about the top of the line for Yanmar's compact tractors, but it is just too small for your 100 acres and jobs you are describing. If you are local, come give it a try and see what you think. It runs fine and has lots of accessories, but doggone it...it's just too small for your purpose.
For one thing, you are going to want category II 3pt implements, and Yanmars are Cat I.
You can get a nice used 4020 JD (100 HP tractor) from the 1960s or 70s - with a loader - for about the price you are looking at. It will do the work.There are other makes as well. I like Yanmars, but frankly I'd look for more machine.
enjoy! rScotty