MM has a number of different versions of whole life policies, and the current interest rate ranges from 5.0% to 5.72% depending on the product. 

There might be some other creative loan products that are available to you so having a good lender can help reduce the monthly payments until the rents increase or you can refinance at a lower rate. 

If you want to buy and hold, use a debt product that stays constant for long periods of time, not one that constantly fluctuates.Another way I think about this: you need to buy a new $30,000 car, you plan to hold onto the car for 5 years and you want to finance it.

Every condo will have assessments at sometime.HO6 condo insurance isn't the product to be used for a STR.

definitely look into private money debt funds then  I appreciate that, but I have a wide range of financial products in my portfolio including quite a bit of debt funds.

I recommend you attend a demo webinar before you decide on a product.

Builder grade or luxury products?

And yes, most GCs will charge more to finish half done jobs as they will be responsible for the final product and do not know how what you have was done.

It can be a great way to sell a problem property for a good price to someone who wants to own a house, has money for a down payment, but can't qualify for standard loan products. 

However, you need to understand the process and what products are available to you, so meet with several and ask lots of questions.