I don’t know anything about utility vehicles because I always either walked or drove a regular tractor, or sometimes ran around in a golf cart depending on the errand and the size of the land. But there is one thing I do feel comfortable commenting on: Respectfully, with other uses of your land—other critters, house, well, barn, garden, driveway and parking, possible riding ring, and other et ceteras requiring space—good sustained pasture management doesn’t really allow for your planned five or six horses on such a small acreage. Sorry, I know you didn’t ask.
I live on it with all you mentioned already...not raw land
And here that is plenty of grass in season...Bermuda..fesque ....blue grass. Hay in winter as needed
600 acres access adjoined my backside of which I have free use trails etc
But thanks
The one-horse-per-two-acre-rule.