There's so much fluctuation in flood insurance policy right now that rates could drastically rise; I think right now they are allowed to raise it 15% per year even in owner-occupied. 

The rent is set at $2200 per month.

Unit A is about 100 years old and Unit B is almost completely new.Pros:-The duplex is in a very desirable neighborhood with home value appreciation year over year at about 50+%-Rent is also in high demand within this area-Cash flows well even with high interest rates and increasing property taxes-Home is price below average cost per sq ft-The house has been renovated and some parts of it has been remodeledCons:-All issues are with Unit A, the 100 year old unit.

I want to add on 3 doors per year for 10 years, then evaluate if I want to continue growing or start paying off the debts. 

Can you sell or allocate this to yourself or other people, the upfront additional write-off per your agreement.

Some people have to juggle and they will juggle until the last minute.#3  Even with #2, sometimes things fall thru the cracks or there is more to the story. 

We would have a positive cash flow of 150-200$ after property taxes and property management fee.

Different fee schedules, different setup process. 

The plan we have is thru the platform we use to syndicate all the marketing but I believe they have a per listing, per month setup if you are manually adding it to their rent manager platform.Apartments.com has been solid but if you want to advertise, Padmission and other housing assistance programs have been a solid source for us. 

I am also looking I only have 6 properties and use a mix of apratments.com, zillow, and QBO but QBO cost so much for the pro per month to have everything automated into it.