Actually buy it for 70-80 k and you are talking an immense return.  

Too vague.Answer changes depending on your annual income from job or business, years to retirement, starting net worth and liquidity, desired annual pre-tax return, passive involvement or more hands on, cash flow or equity growth the main driver over time, etc.

My attorney friend really doesn't have the bandwidth to grow the business.

Once I hit five properties I'd like to ease up on growth as compounding with five will achieve what I need/want.

I believe in paying people back who've done well for you.At the same time, life is about growth, and expansion.

 :)In Hawaii, I believe we have 2 years of reasonable growth in this current market cycle.  

After making some improvements, the home is now worth around 210k give or take and I don't know the strategy that would be most beneficial in expediting the growth of my portfolio. 

Some insurance will cover, some they won't, but regardless the headache is immense.

Until it comes time to draw, I've come here to research and learn.So perhaps I should ask - to those of you good folk in and around the St Louis area, what would you consider an adequate reserve, a good property type for starting out to dip a toe in the water as it were (single, multi, etc), and your own vision toward growth.

This property is especially appealing considering the high growth prices in Portland because of the growth in the area and limited supply of housing.