Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

They will do their own analysis and compare it to mine and we will discuss it and move forward or walk away.

I wrote the above for informational purposes.

The numbers I used are solely for illustrative purposes. 

I've heard that LLC's are not absolutely necessary, but I would feel better for tax and protection purposes to have all business monies separate from my personal monies. 

The main issue with SFRs compared to multifamily is scalability.

I have two kids and a wife so it will be a sacrifice compared to what we are used to but totally worth it.

Compared to NY, annual taxes are pocket change and appreciation is happening very quickly.

Cash out has higher interest rate compare to rate and term finance.

With the high construction costs nowadays it's hard to add that much value, plus ADU's don't sell at the same $/sqft as the regular house, and there's not a steady readily available comparable properties to base valuation so the easiest method is replacement cost.I hosted a Meetup and wrote about ADU's on my website.