Since all parties are willing and cooperative, still use an attorney to draw up paperwork that covers all contingencies and all parties' interests.You'll be glad you did. 

Lower land and building costs mean higher returns on investment, and there’s a quiet but consistent need for quality housing as remote work and cost-of-living shifts draw people away from cities.

I'm just wondering if homes that are furnished draw in tenants who don't tend to stay that long?

You can just draw lines on a map, and it can spit out every property with whatever parameters you put in. 

So, there is no argument for using margin account to try meet/beat REI returns because it would just nurf your WS returns down all the more, expanding the divide between the 2.  

If you divide that amount into the capital gains tax savings, you'll get a number of months you'll have to own your current home to make the interest savings exceed the capital gains savings.

When you draw from the equity, you are "borrowing" it from the bank and have to pay interest.If you borrow against the equity at 7% interest and then loan it out at 15% interest, you are earning a positive 8%. 

But now you could refi, draw out your initial investment and the property would cash flow.

You shouldn't pay any draw until the work is done.

It comes down to factors like your area, your market, your experience, the team you can draw from and how mush you need to make to support the investment of time and capital.