We basically did this, but as we are older we are not bothering with holiday homes. Over the years we have traded up with houses, my dad was a builder so we have always bought the worst house in the best place, and even it a do over.We had enough equity to buy a property that was unmortgable, a small bungalow, out buildings and 14 acres, it was cheap because most people did not have enough cash, and the land is only really good for grass. It took us nearly six years to find this place, and you have to be persistent and look at everything. We now have a house that is worth double what we paid for the whole plot, its A rated, with 9kw solar, but more importantly we have a lovely life here. Fencing is mains electric, so it's relatively cheap. The animal bit is time-consuming, and for most people who have not had animals that's the hard bit, because you are tied in time and money. Caring just for grass is expensive, I have just spent £400 on fertiliser. So I would rent the land out on a licence.
Do not expect income from animals. Camping, glamping, wedding venue, look at lots of websites and steal ideas, and work out how much work you want to do, remembering what and where you buy will end up dictating your plans.