I imagine the fees could eat you alive with multiple accounts, but being I am totally new at this, I'm not sure what is the best method.Thank you for your time, knowledge and advice in advance.  

Our realtor said she can put together the FSBO paperwork, but are there different fees (or cheaper?)

I generally think the fee is worth it if I don't have to constantly worry about the property, and don't mind the hit to my cash flow since this investment is absolutely driven by appreciation. 

Not sure if I want to hang my license with a flat fee company to have access to the MLS and maximize return in investements.  

Are the Realtor fees relatively similar to a normal real estate deal?

Your agent may willingly bow out or may agree to some small flat fee to represent you.

And you are right, I did not account for a management fee since I am planning on managing the property myself.

I want to be able to figure out what a unit will rent for and from looking at numbers it seems the rental price is the biggest factor for ROI.

As it pertains to PM, you will want to factor in the cost of management whether you intend to manage the property yourself or not.

Rent is due on 1st, late on 5th, along with late fee.