So I say selling is most likely your best course but regardless, to grow your portfolio stop doing 15yr terms. 

I am wanting to get into fix and flips and eventually long term rentals. 

It was purchased from MLS as a long term buy and hold rental.

I would like to add 2 - 6 container living houses for short, mid or long term rental.

The owner should look at it more like a DSCR, and should be pricing the property and offering terms such that the income from the property is adequate to pay back the loan.

These are top drive-to destinations for much of the Southeast, so short-term rentals here can generate solid cash flow, especially during peak seasons.The area is also seeing steady growth, with more infrastructure and amenities being added to support visitors and new residents.

Flipping, renting, or sitting tight for long-term appreciation-there is potential for anyone willing to do the work.

I’d offer to sign the form if I was allowed to cross out everything between brokerage firm and during the terms.

What are your loan terms?

If that's the case, you should be able to rate/term refinance at ~75% LTV with a DSCR loan, and with some interest-only basis, your payment will go to ~$850 (based on ROUGH pricing TODAY).