Building a real estate business that way is a house of cards (pun intended). 

A lot of folks jumped into the rental market in the last few years and we have more competition even in our specific neighborhood than I remember the last time we rented this home out 3 years ago. 

I now want to look into "flipping" new construction or spec home building.

Looking into single family houses or multifamily, as there is an actual land that you own and potentially build ADU/DADU in the foreseeable future.

3) Where can I find accurate market data such as school system ratings, population growth, median household income, and crime rates for specific neighborhoods in Orlando?

"Old" ones are with the previous theory of build 3em to last and to be repairable.     

If you're the kind of person that needs hard math and graphing to understand things, this is completely the book you need on building wealth through duplex living.If your wife is behind you in this idea, and can see it as a move to financial independence, congratulations, you're in the small minority, as I am.

It is code here where I live to have moisture barrier as part of the build.

I just don't know if I will be happy or feel safe living in some of the homes/neighborhoods that I would be able to afford paying cash for.I've heard opinions for everything from 10 year, 15 year, and the 30 year mortgage options.

I purchased my first rental property - a newer home in a high-appreciation market and neighborhood - with a business partner, and she and I have had the hardest time getting it rented.