This could improve your margins.Occupancy Rate: A 60% occupancy rate seems low for Jax Beach, but that is a reasonable conservative baseline. 

Is it wise to buy some units with high cash flow and low appreciation, and others with lower cash flow but high appreciation to diversify my portfolio?  

For example, areas like Chicago have a strong demand for furnsihed rentals, especially in neighborhoods near medical centers.

Sure you could do a money market or put it in an ETF or something, but this is one of the options where the balance "can't" go down or is extremely low risk while making a decent yield.

. - Low-income areas = High cash flow, low equity growth - High-income areas = Low cash flow, high equity growth - Median-income areas = Average cash flow, average equity growthFor me, median to high-income areas are where I like to focus.

If Chicago, are you already working in any specific neighborhoods?

Having trouble getting any quotes for a low value SFR (<100k), any leads appreciated

Yields in Boston are very low.

Are you noticing specific property types, neighborhoods, or price points where buyers are finding the most opportunities?

Larger are as low as $1.15.