seems like a good time to buy in the US, so...
some things to consider: I only lived in flats (apartments) until I was about 40. Free standing houses with yards are a lot noisier, mostly people with kids buy them and you've got BBQs and kids yelling and screaming and you've got the lawn to mow. However, if you like gardening (i did) you might want to try it, and you do own the land freehold (or something like that), unlike strata titles where you only own the airspace.
Generally it's good to buy stuff that will appeal to the average buyer because if you need or want to sell it's easier. Corner blocks are better because there's less neighbours but more lawn to mow (two corners).
80 mile doesn't sound THAT far for a place you like - that's less than an hour commuting to work?, lots of people do longer trips than that, but if that's you nearest shop or petrol then that's a problem, you need goods and sevices to be closer than that. I recently bought a neglected small acreage and a rundown old house and it's been hell, but it's close to a small town (about 2k/1 mile). i'm old and on my own so it's hard and there's a lotta physical labour. I think the first year on a neglected property is pretty hard. you may need a tractor (expensive) or a neighbour who will help out with their tractor for the slashing (mowing) if you have pasture. There's also rabbits and other pests (i'm in Australia) you have to deal with, so there's really a lot of work involved but it's got it's good points too as you can imagine. These sort of places are a lot slower to sell if you decide you don't like though.
I had to live out of a camper van for 5 months when I moved states and I didn't really like it, you have to do all the driving and there's very little privacy, it's a very public life. but some people like it. It sounds like you think it will work.
Have you actually started looking at any houses or vans? Where were you thinking of parking the van because van parks can be hell. You can get finance?