You can hang your license at a discount brokerage that just charges a couple hundred bucks per transaction, and they really don't care what you do beyond that, so you don't have to worry about any time commitment that would take you away from your other pursuits. 

Is it possible to buy that land at a steep discount? 

I have been finding some really great deals with excellent profit margins.

Sorry @Robert Crossley, maybe that is my newbie speak coming out, but you did answer my first question that you used full potential rents and then discounted them in the vacancy expense.

Note: So long as EVERY buy is at ~30% discount from day one, you won't need to be $24-50M out of pocket after 25 years, because you'd be able to refinance EACH buy after 6 months to get ALL your initial deposit back!

And the guaranteed bit is key too ... sufficient margin of safety must be maintained on the non-risk-free alternatives or else when bad stuff happens in the market then really bad stuff will happen to you as an investor if you lever to the hilt without any margin for error.

Search for 30% discount on the price per square meter. 

Often if you pay right away you get a discount. 

Of course that all depends on your marginal tax rate when you're claiming the depreciation. 

I recommend: go find MOTIVATED Sellers, who will sell for 20%+ genuine discounts!