You could partner and offer a preferred equity position (i.e. payment of a set interest rate on a monthly basis + some type of fixed annualized return when you either refi or sell).But with either option, which are your most realistic options for this deal, you will have to show some significant upside.  

It looks like there are about 1,200 listings in the "Village of Four Seasons" section near the Bagnell Dam.The entire area rates really low for seasonality, so you may consider how much a week in the summer will actually cost you if that's your "break-even" time.Happy to give you more data if you're eyeing a specific property or ZIP code.

You want to know where they have studied, how often have they done that procedure, how amazing is their success rate etc. etc right?

You may end up paying a higher interest rate on a higher payment. 

Short term gains are taxed at your ordinary rate.Active income, though, is always taxed at your ordinary rate.

Is there a difference in rates or process?  

Inventory is up, transactions and mortgage applications are up, mortgage rates and prices are generally flat. 

Rental Amount: Charge "normal" market rates, higher?

This also has the benefit generally of paying a lower marginal tax rate throughout your years of saving for retirement.

You mentioned that you are planning a relocation with your wife and kids, Saint John's schools are known for being top rated schools in Florida.