18 Year Old Investor

[Justin Ruholl]

My parents and I just partnered on our first single family home which is bringing in about 580$ in cash flow total.  Sounds like a lot but we combined our mortgage and ended up getting more rent total then we expected.  

My question is, for my next investment I was going to try and get a duplex. Would you recommend me to get an FHA loan and live in one side so I can get the highest ROI I can get, or pair up with my parents again, and just put 20% down and have 2 tenants in there right away instead of after a year?

Side note: There is a duplex straight across the street from my current rental(off market, older couple who wants to move, one side hasn’t been rented for 2 years) 

Also:  Brandon turner always says he looks for 200 cashflow/per unit.  Does that mean he wants to make 200 cashflow per unit himself or 200 cashflow total for him and his investors to split into 100 each?