Hello tsfrance from Nevada. Welcome to the ATV Connection. My first post here last November was very similar to yours. I knew nothing, and needed advice about these ATVs. I'm older than you and retired. I think you will get lots of replys to your thread. I'll start off with my inexperience.
I recently moved to Colorado from Minnesota. In Minnesota I had a compact tractor for mowing, blowing snow, grading, and it had a loader. Perfect for my acreage. Here in Colorado my ground has many pine trees and I couldn't get the tractor around at all. So I sold it. Sad. Snow falls is my biggest headache in Colorado, as well as dead pine trees.
Most ATVs will carry about 300 pounds on their racks, they have limited tongue weight capability on the trailer hitch, like only 50 pounds. And there is no PTO for driving other implements. A tractor they ain't
However I told the wife that an ATV is like a mountain tractor, or mountain goat. It is less than 50 inches wide, and with 4wd a pretty good tug. It will push snow, and pull a small trailer. I can maneuver it between some of the trees. It has a winch on the front. That is about all I need around here. I think an ATV is better at pushing and pulling. You can use the winch to lift an implement. That's how I lift the snow plow on my ATV. It was designed that way. Besides, I wanted to go trail riding here in Colorado and I enjoy "motor toys". Ulterior motive!
I have learned on these forums that the Honda ATVs are reliable and good workers. Honda was a leader in making the quad ATV a good farm implement, not just a trail riding "toy". I think you would find the 4wd option handy from time to time. You can push and pull more with 4wd. Polaris is maybe the largest volume manufacturer and has lots of dealers. The reliability reputation for Polaris is not as good as Honda. Many folks do a lot of work on Polaris machines. Yamaha makes a good machine too, same with Arctic Cat. There are many choices. Folks more experienced than me will advise on good makes and models to consider for your "ranch".
The main purpose for an ATV is trail riding, rough trail riding I might add. ATVs are motorsports "toys". It is not unusual for owners to completely submerge the ATV and have it ingest swamp water into the engine. Or roll the thing over. Or jump off a ramp. These machines get used hard and may have many problems sitting on a used ATV lot or somebody's garage. Being very clean means nothing related to mechanical condition. But a good used machine is thousands less than a new one. Your budget is very reasonable for finding a good machine it seems to me. Just take your time. I spent 4 or 5 weeks just deciding which way to go.
You need a dealer or seller you can trust, and who will stand behind their description of the machine.
It might be that something in the 400 to 500cc range will work for you. I don't think you need gobs of horsepower for dragging (or pushing) a spring tooth rake over your ground to help cultivate it, or push snow, or pull a trailer with brush in it. And you can ride trails with your ATV easily, that's what they are designed for. Gobs of horsepower just allows you to accelerate faster, do wheelies, pull through deep mud, and jump farther. None of which either you or I will be doing.
This ATV Connection forum does have a used machine clasified section. Here is a link to an example:
Hope this helps your thinking.