California since real estate is handled very differently in Maine compared to California.

Problem with this is double the security deposit and a triple signing bonus is a drop in the bucket compared to the costs renting to this segment of the population is going to cost landlords.

You left out one of the most important parts of this discussion and that is how your units compare to market rent units. 

The best thing to do to determine adding value is comparing to other duplexes in the area. 

The realtor commission is nothing compared to the additional benefits and sales price. 

To determine the most attractive real estate markets, WalletHub compared 300 cities across 18 key metrics.

I would look around, call some management companies, attend a local (closest) REI meeting and get a clear understanding of what market rent is for comparable units.

I have access to the MLS to see listings right away and can accurately run comparatives and look at all data myself. 

To compare pros and cons can get you to good solution. 

FHA Pros:-Friendly to lower credit scores (580-680)-Can buy multi-family with the same 3.5% down payment-DTI up to 55% (vs 45-50% for conventional) FHA Cons:-More difficult property/appraisal requirements-Frowned upon by agents, so the offer is weaker compared to conventional-LOTS of additional back-end stuff that makes a lenders job more difficult -If you're in a community property state, you have to include spousal debts even if they're not on the loan-Permanent mortgage insurance (but if you put 10% down, it'll go away after 11 years) -Fixed mortgage insurance (0.85%).