Your goal should be to continue to receive decent cash flow from the existing rental while you take the money you get out to buy something else.  

I rented out a tiny commercial space to some ladies that wanted to open a retail clothing store. 10 days after move in they had a falling out and one of them moved her portion of the merchandise out of the store the next day.

So make sure you find someone that you connect with and will help you reach your goals. 

I don't do conventional lending, but I suggest contacting a conventional broker to see what options are available for your goals. 

I am currently living in the main house, but will soon be moving in the upcoming summer due to another purchase.

The goal of AB 2216 is to prevent landlords from having blanket bans on common household pets in rental properties.

You need to know what their financial position is, what their goals are etc.

but if it showed success it would likely give me the needed knowledge and comfort to move forward with other Multi fam deals instead of specifically focusing on single fam.

That's where we are moving.2.

So the goal would be for the property to be transferred to a new owner while keeping in tact the same mortgage.