Each parcel can host up to two units, effectively enabling up to four units on what was previously a single-family lot.

I don't know how much more cost effective a one off modular  house will be.

Any suggestions on that?

The Port Charlotte duplex...given it hasn’t suffered hurricane damage...could command a pretty penny on its own.I recall reading a piece in Forbes that suggests certain Florida markets could remain strong for years, which might help you gauge whether now is the right time to sell.

Like your post title suggests, you die to avoid the taxes.

Do you suggest adding a package to my digital guidebook or offering it differently?

For the immediate time, I'd love any contractors and handymen suggestions, but eventually, to work with agents to buy and sell in the area. 

Need more information surrounding why your current lender is suggesting they cannot utilize the rental income on your investment property.

Quote from @Francisco Solano: I suggest you ask a business attorney in your state for this basic template.

But it's a risk.If the PM is that bad, I suggest you do some research and find another manager.Remember: cheaper doesn't mean you'll make more money.Start by going to www.narpm.org to search their directory of managers.