Traditional mortgage brokers will not be able to help.

The house is in a flood plain, so I can see a benefit to using concrete over a traditional wood supported floor when moisture/rot is an issue. 

I had a construction loan that obviously came due. i tried to get a traditional mortgage and didnt have success so I ended up paying cash and now own the place outright. 

@Matt WatkinsI studied the foreclosure auction process for my county and city for eighteen months before I made my first successful auction buy, and my city's one of the easier ones to learn, as this is a judicial process state with a traditional sheriff's sale process.

Conversely, if one's focus is rehabbing/flipping is it vital to be available during more traditional "business hours" to visit your projects, and work more quickly with industry professionals (contractors, lenders, etc...) 

@Eleanor Curry  If you can imagine a HML on the left and a traditional bank on the right private money lenders can fall anywhere in between.   

This type of financing, designed for individuals who will live in the property, often comes with lower down payment requirements and more favorable interest rates compared to traditional investment loans.

My focus these days is centered on more traditional investment properties (multifamily, self-storage, mobile home parks, retail, etc).

They could be offering bad advice without even knowing it.If you expect the place to be vacant for more than 30 days most traditional policies will not work.

The potential cash flow from STRs is great, but I would encourage you to run the numbers as a traditional long-term rental in case the short-term option doesn't work out.Are you planning to do another house-hack on the new property, or will it be exclusively a STR?