Multi family first buy. Owner Occupied

[James Michael Carroll]

Hello! New to forum have a question, i'm in the Metrowest Massachusetts area. 

Want to buy a two family as an investment. If I don't occupy the residence, the down payment will have to be at least 20%. (Right?) A Owner Occupied Residence can be purchased with a rate of 3.5 % or likely a little higher. Is there a minimum time I would have to live in the house before getting someone else on a lease. 

I have a good living situation now. Multi family is the best bet for my area (as it seems to me...), i would rather not spend all my capital on my first investment to have to wait another 4 years for legitimate capital.