Real Estate & the stock market have always intrigued me, so I have been reading and watching videos for a few weeks.

The year that I sell the house my income will be the 115,148 plus maybe 20,000 in interest/dividends/stock gains.

Please note that I believe that money flows to deals - always has, always will, and it doesn't matter if it's Self Storage investing, residential real estate, stocks & bonds, etc. - if it's a "deal" the money will come.I say that because in commercial finance, yes, you as the borrower (credit, character, collateral, etc.) certainly plays a part but so does the project itself. 

Every investor knows that the stock market runs in cycles and it doesn't take a genius to figure out that the current bull market is about to end.Business is booming, money is flowing, and every investor knows that real estate is a great place to park cash in preparation for the problems coming in the stock market.The more money flowing into real estate, the more competition there is, the more prices are going to be driven up.

Other than that, might be best to trade stocks or find other investments; don't let money sit doing nothing & lose out on inflation.This is just what I'd consider doing, personally.

However, as an engineer I tend to run a lot of numbers and I put a lot of stock in those numbers.The first deal that I bought: I found a duplex that made sense.

So there Is one another arrow for your quiver and I bet this can happen with nursery stock and other items.. timber is real property until the time its severed. 

@John Smithe - This is going to come down to the following:1) Your personal investment philosophy: your goals, your interests, your time horizon, your risk tolerance, and your interpretation of world events 2) Your unfair advantage: your skills, your expertise, your network, your resourcesBiggerPockets tends to bring together like minds and similar experience, so this sampling bias might result in concluding that a large multifamily in the Midwest, for example, is the best use of your funds.Ask the broad universe of investors the same question, however, and your answers will be quite different.Real estate might well be your best investment, but so might be starting a business, or picking stocks, or buying precious metals.  

Heloc's that I have seen float against some index and nobody can predict future interest rate.

This is NOT legal or professional advice.SITUATIONMy issue with SDIRAs is the tremendous amount of UBIT tax that the investor has to pay. "39.6% after just $12,400 of income subject to UBIT"That is a hefty amount of tax rate for just a small net incomeIt's become difficult for me to advise my investors to invest with their retirement funds due to these UBIT taxes, at least for now till I get more information.BACKGROUNDSDIRA's have become very popular as of late due to the tremendous amount of capital available in that space (trillions)Many Sponsors often advise their investors to invest their retirement funds into their syndications via SDIRA to "diversify" their portfolio from just stocks/bonds/mutual funds from their IRA/401kASSESSMENTI don't think many passive investors are educated enough about UBIT/UDFI taxes and how big of an impact it is to their ROITom Wheelwright in a podcast has mentioned using a Solo 401k instead of SDIRA to help lower some of the taxes you have to pay.