It's basically a legal 2-unit that can cashflow $900/month.

I believe I can do this with the upstairs rented out at $1,650 a month and $1,750 for the main floor unit. 3bed 2bath down and 3bed 1bath up.

The best way to do this is to renovate a unit or two to the specifications to bring it up to market.  

Think multi unit residential, commercial properties, or purchasing houses “subject to” existing mortgage.  

This is how I see it:Single-Family Homes:Pros:Larger pool of potential tenants (families).Simpler management (one tenant, one lease).Often easier to finance.May appreciate faster in some markets.Cons:Only one income stream.Vacancy hits harder financially.Duplexes:Pros:Two potential income streams.Live in one unit and rent the other (house hacking!)

We just completed 6-unit one bed one bath apartment in midtown Sacramento, CA As we are considering doing MTR, your feedback on how to move forward with this plan is appreciated  

I've invested in both multi-unit properties (2-4 units), and multi-family properties (5+ units).

Quote from @Brendan Doherty': I’ve read in books of people getting past having to live in the property they own so they can rent all units year one of ownership(living on the property with an rv).

It is just laughable when places have regulations like a homeowner can only have a certain number of STR listings by the law but these big name companies suddenly start with 20 units in the first month.

I feel my money is best spent building a portfolio of cash flowing units.