Disclosure: I think tiny houses are supercool.
But: The idea of blowing 2/3rds of your stache on one sounds like a *really terrible* idea.
CAVEAT EMPTOR.
As others have said: tiny houses will likely depreciate.
And getting into land owning/development... there is a whole world of knowledge required so that you don't lose money on a land/development deal. I could tell stories. Long story short, Undeveloped/semi-developed land is an illiquid market with price fluctuations based on a lot of things outside your control (such as the price of corn, in some areas, regardless of whether you are growing any on yours).
You'll want to educate yourself _very_ well on local building codes, utility access, easements, taxes, and what drives local land/home prices before making such a purchase.
I know in some places, a buildable site will run you 50-150k or more, but for your dream you don't really need that. Tiny homes don't need a foundation and, depending on local codes, can often be built without a permit. A common theme is: if it's movable and it falls within a certain footprint (say, 9' x 12') then it doesn't need a permit.
If you really want to live in a tiny house in your situation, I would highly recommend _renting_ the land. You can also buy tiny homes pretty cheap (remember, they depreciate, or at least they seem to in our current market). You may also be able to find actual tiny homes to rent, and try it out for a while.
Often people have a lot of land and wouldn't mind at all if someone parked their tiny home on their land for a small rent, say 100-500/month depending on the going rate. And you ought to be able to buy a tiny home for $15,000-$40,000 or else build one yourself for that price or a little more.
Good luck, have fun, protect your 'stache!