hello,Also just analyzing a new construction property with lower builder rate offer of 4.875% if FHA.

There are people who have an entire business helping you set up and design a STR relatively quickly (3-7 days) depending on size of home and complexity but you are going to be paying a bit of a premium but you do save on the headache.

I also ran my own roofing business one summer of college.

Are the business on there trusted? 

I am seeking advice of what to do with the money from someone who exit the business and successfully got similar income and appreciation of capital.

And I'm not saying this to earn your business just as if it was a residential property.

A HELOC offers flexibility and lower interest rates, which can be ideal if you’re looking for short-term financing with lower payments during construction.

Interest Rates: Current spreads, rate structure, buydowns, mission driven business, factors that influence your rate, etc.5.

I also own a co hosting business but my rentals are in FL and TN. 

When running your numbers, if purchasing a home that isn't new construction and less than $1MM, I would estimate 1% - 1.2% of the purchase price as your annual insurance premium.