What can you do with them or what do they give you (such as tax credits or density bonuses) in exchange? 

If not, that's a big part of your problem -- you need MLS exposure and the marketing that a great listing agent can provide.  

The fire department has blessed the extra rooms as bedrooms, so what were "2 bedroom units with 2 bonus rooms"  became "4 bedroom units". 

The nice thing (bonus) about doing it this way is you also will be learning/training your eyes to notice things you never did before that will cost you money.  

Since I am a first time homebuyer using FHA though, I plan on looking into other bonuses I may be able to secure.

Yes, if my family is there assisting me with maintenance during the scheduled period that is a bonus but. for the sake of my customers I want to accomplish major maintenance in a scheduled manner.I am still planning to use 7 day period for preventative maintenance and repairs.  

A post a day will get you exposure and credibility to leverage at a future date.

Not any comparables really.5 units10 bedrooms3 bonus rooms5 Full bathrooms3 3/4 bathrooms7 garage space 6 uncovered assigned parking spaces Lot size approx 9500sqftHabitable space size approx 5500sqftMy owner wants to sell if he can get $995,000.

You also, it sounds, already have a boatload of personal portfolio exposure to this neighborhood.  

I always used the exposure the MLS provided.