This will allow you give a reference point on how much potential rent you can receive.

Can someone share where in the Atlanta ordinance it refers to shart term rentals as 180 days or less?

And prior to that, it likely took her hours to research this specific topic, and years to get to the level where she can answer without having to read the reference book.

This is not 100% financing...I am referring to NO CASH, no cross collateral, NO MONEY DOWN.

I think you are on the right track comparing options - however I would note that there isn't really a differentiation between "DCSR" and "ARM" - there are a lot of 5 Year ARM options for DSCR Loans so theres overlap - maybe you are referring to a true 5-year balloon bank/credit union type loan?

Require them to have a landlord reference with the pet.

(I am referring to Illinois Series LLC).(1) Do I need separate EIN number and separate bank accounts for each Series in IL OR I can have only one EIN for master and one bank account? 

The image attached is an example calculation I did and I had to push the appreciation to 25% to be able to pull a good amount for the next down payment.With these calculations, it made me realize that I might have to find alternative ways to go from house hack one to house hack two.

@Abdi Muya - I'm not sure if you're reference a real estate broker or a mortgage broker. 

Brown RentRedi tries to enhance the DIY management options.It is NOT a replacement for a PMC.Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.