I am in the closing process of buying my first duplex.

I did not mean that Section 8 should be treated differently, I added that info in case there was some regulation that I am not aware of that may change people's thought process. 

You can save 300 or so a month for reserves and still cashflow 200+ a month.If you realize the management/process is too complicated or a pain, or no one wants to rent your specific home, you can always pivot and sell the home then. 

And that all depends on how you have structured your investments.

I've never done this before and wondering how do you structure deals with private money?

My in-laws would be our go to folks to have eyes on the rehab process and walk rehabs on a regular basis.

If I want to terminate the lease what is the legal process for doing so? 

It's just gentrification process from baby boomers/old timer settler to the new tech generation. 

I’ve done my best to research the process but wanted to get additional guidance.

The result of 4 total units is the same as the lot split but it seems like it would be longer to go through the process of splitting the lot as opposed to just adding a primary SB9 unit which you can then add an ADU to.