A few things to note, I will be house hacking the duplex, the duplex isn't in my name, it's in my fiancee's name, and the card was initially opened as a sole proprietorship for some property management/repair work I've done.

I still need to furnish, etc.For the experts here, do you typically use traditional financing or use other sources?  

Is there a good public source for transaction history?

I've heard the number one claim against these policies is for water damage....to the unit BELOW the source of the water leak.

., and came up with the Howey rule:  "a contract, transaction or scheme whereby a person invests his money in a common enterprise and is led to expect profits solely from the efforts of the promoter or a third party." 

Are realtors a good source?

Like I would be buying for a sole income property to make sure that in time if I decide to move on the property will cash flow ? 

Florida's subsidized insurance provider, Citizen's Property Insurance, is the provider for sinkhole properties - and you'll be limited to that source; the cost will be higher. 

Our work has slowed down and we now have time to explore real estate as another source of income.

She's sourced properties for me and sold some as well.