You much bigger problem seems in be simply insufficient income.

To clarify (I had the same concern), risk of losing the sale is apparently not related to buyer's knowledge, but lender finding out about vacancy and or insufficient income. 

Whomever you select, be sure you do thorough due diligence on the potential investment sponsor and thoroughly review their offering materials to determine if the investment is properly underwritten and suitable for you (in other words, the business plan is in alignment with your objectives).It isn't uncommon to see lofty projections, unachievable returns, missing track records, insufficient expense budgets, aggressive economic vacancy projections and high rent growth forecasts. 

I turn down a lot of working people at another building I own simply due to insufficient income and many of the folks who live in this other building have roommates or family they live with to cut costs. 

I think the bigger risk short-term is Fed policy mistakes causing unintended negative consequences to a housing market that's already challenged by structural inflation, higher rates and insufficient inventory.  

If I were you, however, I'd hold off spending much money on training until you find that the tools you have are insufficient for the job you are tying to do.

So if you have 600K now, you may want to wait before converting to a Roth, as you may end up with insufficient funds to do a transaction.2.

.- Safety Issue: There is insufficient clearance between the baseboard heater and stored items and furniture.

Turns out the gas main was insufficient to supply the demands of a tankless unit. 

(No footings/insufficient depth/freeze-thaw heaving) You might be better off simply removing the concrete and rebuilding the porch out of wood.