But what if we want to sell interests in the LLC after its formed to help subsidize the build?

We are trying to figure out a way to sell ours.

You can choose to take on the associated liability issues in doing this, but a good PMC CANNOT.You may consider selling your Class C and D properties and buying Class A & B if you can't handle the challenges.

I can listen to books and educate myself on whatever I want while at the gym, in the car, etc.There are a wide array books available and a few I think may benefit you to start with are...Buy, Rehab, Rent, Refinance, Repeat - The BRRRR Rental Property Investment Strategy Made SimpleFLIP - How to Find, Fix, and Sell Houses for ProfitThe Ultimate Guide to Wholesaling Real EstateBigger Pockets has become one of my best resources.

Do I want to sell?

So hypothetically if someone bought a house in 2023 below market value for $500k with $550k ARV comps in the area and locked in 7.15% APR as a primary residence -- would you hold or sell to capture the upside in the home? 

I see two key problems with this plan.  1) "Selling" the properties to the LLC would create a taxable event, so you wouldn't want to do that.  

As others have mentioned, you will likely see cash-flow opportunities on the North and West side of Jacksonville.I personally think there is room for appreciation in the Jacksonville market as population has increased double-digit for the past 4-5 decades.

Hi Neno,Will you be occupying after closing and not selling? 

"They" just sell you on "tax benefits" and people think that will decrease their yearly tax.