The industry found better ways to make pop cans aluminum versus metal, recycling became more common and 35 years later, you don't hear about this anymore.

They are taking the risk versus other potential investors, thus they should take the failure when things go sideways.  

What is the benefit to the land owner to giving you equity versus just hiring another design/build firm and paying them for their contracting services without giving up equity?

I'm more focused on trying to find that unique property that I know will be successful in any economy versus trying to time the market. 

It’s also important to keep track of personal versus rental days, as too much personal use can disqualify the property as a rental for tax purposes.

When deciding whether to sell and reinvest in a higher cash-flowing market, you can use several tools and strategies to compare high appreciation markets versus high cash flow markets.

I am not a financial advisor and not giving financial advice.Reading through your post, your concern is risk management versus paying down debt, which might be a solution.1.  

Kathy,  I think the first step is to use some of the great tools on BP to analyze how your current investment is Preforming versus what a new investment might look like.  

The primary reason a lot of people move on to bigger deals (80 units plus), is that it's possible to own larger properties in markets that make economic sense but may be far from where you live. 80 Units seems to be the target so you can hire your own full-time property manager and maintenance person, versus relying on local property managers to manage smaller multi-family properties on your behalf.

That’s great advice to evaluate the potential increased cash flow versus applying the extra money to a different asset.