JMER817, I believe I have as much experience as most folks in surviving in a few countries on my own land. I like the advice given in the link in #2 and that of 300UGUY at #6. I would add that I spent more than a few years behind desks from time to time when I needed some cash. Eventually (early 50s - agewise not time) I became too old for most employers' liking.
There are two further comments I would make, and I included them in a book I wrote. The first is that the successful people that are household names in their own country and further afield have, and do, make most of their income from non-farming activities. You know their names. If they were really successful at making a lot of money from their land then they would not need to run courses, use volunteer labour, go on lecture tours (for high fees) and make videos. Nor indeed write books. The second is, find your market and ensure it will continue, BEFORE you begin production of anything.
You can survive, you will never make millions, but you can enjoy life on little income, provided you know how to feed yourself from your property (do not strive for total self-sufficiency) and can live without the niceties of life. Reducing expenditure is a lot easier than increasing income.
Whatever venture you begin, after finding your market, it needs to be something quickly into production. The market you have found is not going to wait even one year for you. As already pointed out, tree crops are very long term. Even if you only have one customer to begin with, it is a start. Supply that customer as if your life depends on it - it might!! Supply also a quality product, always better than whatever the competition is offering. Then expand v e r y s l o w l y.
Keep the day job as long as possible, and you need a good woman that agrees with your ideas, and is prepared to look after the place whilst you are at work.
Best of luck to you.