I am also located here in Chattanooga. As shared above there are several options available.
HELOC your personal residence with a credit union if you have equity and your first 12 months usually come with an affordable intro rate ie: 2.99% and I'm sure you can complete the project in that time and either sell or refi out. All interest is tax deductible.
BELOC an investment property with equity that you already own and follow the same principals.
Get a conventional construction to Permanent financing to rebuild. Then sell off first of 4 and repeat. Use your 1031 to roll profits into next project.
Use a hard money lender to finance everything most expensive option but easiest money in most cases. They will usually cut you a deal moving forward as you use them over and over.
I have GCs, HM Lenders, Contractors, and Builders in the area that can take charge and handle every aspect for you. You would only have to make decisions based on numbers. Also if you end up selling I'd be happy to help you with that personally and if you end up turning all of them or some of them into rentals I have a great property manager that manages my personal properties and 900+ units locally.
Best of luck and I wish you a prosperous beneficial future. Excited to see what you do!