Financing for a 5+ unit is much different, so ensure you understand the lender requirements.

Then choose only houses, change from for sale to already sold in. the last 3-6 months ensure you put 3 beds up to baths.

Buy and hold along with passive investing in funding opportunities and an occasional fix and flip a few times a year would be a great way to diversify and ensure you hit your long term goals.

Meanwhile I'm saving as much money as I can for a good head start (most of it is invested in the stock markets, in low risk low revenue stocks).I set 2 goals for myself, which are-1) Ensure financial security for my future family,2) Do everything I can to bring peace to the middle east and the whole world.

I would like to ensure that the management company has incentive of choose a good tenant rather than filling the unit as fast as possible. 

You should get an inspection to ensure that you understand the issues that you may be getting into with the investment.

I own an apartment in Washington, DC, and have personally managed it for years, and I recently had some extended drama in paying back part of a security deposit to a tenant that had broken their lease.They claimed that the check never arrived in the mail, so after giving plenty of time ensure that this was true, and putting a stop payment order on the check, I sent them the payment via PayPal to ensure that we had no more mail issues.

Are we the only players on the field that understand the rules?

Since entering, some of the bigger players have tried to imitate us, but their contracts still have nickel and dime fees littered in there here and there. 

I want to ensure I am conducting business legally according to Florida law.