If it does change, what are the best practices, calculations/ number, and strategies to follow and ensure all debts are paid and the property properly cashflows? 

While you did not mention how many bedrooms or baths each unit is, so I cannot properly speak to the approximate rent, I am confident that it would not be near as high as 3500 a month.

The fact they are complaining online might be an indication the property manager dealt with them properly so be sure to ask the manager for their side of the story.I hope this basic guide helps.

Does anyone know where I can find the proper info on this for Florida???

Assuming its best to do out of Austin proper due to prices and do flips to build up reserves to buy and hold eventually?

Although I have income , what I’m looking to do is set a proper foundation.

You'd need to pull title and do research with mortgage servicers to get the proper information.

Hold for awhile and split the profits or have a public auction almost immediately after you control it.These are just a few ideas that should stimulate your creative juices.  

Here is one that I developed a few years ago when we used to bid at Florida auctions (Can't get formatting properly):1Property Search & Filter Search properties a minimum of 5 days in advance, valued between $XXK and $XXXK2Review Crime ReportsAvoid high crime and high vacancy areas3Determine ARVMake an informed decision of the Fair Market Value/After Repair Value based on comparables, tax assessment and physical condition4Enter Property Data into SystemRecord ARV, Assessed Value, Sq Ft, No.

A lot of time compared to e-mails, a phone call or chat.