I'd recommend you check with a knowledgeable lender from our local area in Milton, Pace, Pensacola, or Gulf Breeze, FL.
Kasie Copeland at University Lending is one such lender I would recommend. She is extremely knowledgeable about the many loan products available and would be a great choice to discuss your situation with. Here a link to her company and profile information: http://www.university-lending.com/KCopeland.html
Please let her know I referred you and good luck to you in your refi endeavors!
If I can help you in the location of additional investment or vacation property in the area, please contact me! I also lease and manage property, should you need a property manager or assistance in finding future tenants.