I know I could have a family member co-sign a mortgage with me but not sure the best way to approach that conversation and what incentives I’d be able to offer to make it worth while for them other then their “familial duties” haha. 

Hopefully things continue to progress, and you come out on top with a huge equity position/high cash flow when it's all completed. 

Watch out for what gets deducted in home warranty or concessions but those will be in offers you accept. 

Hey Andrew, welcome to the Forums.That’s awesome you’ve been learning about real estate since high school—starting early will really pay off.

The rate the manufacturer offers is 4.8% which is why I am going through them.

Key Questions:Would it be more financially prudent to sell the rental property and pay off a chunk of my high-interest primary mortgage (7.375%), and use the remainder for a fix and flip?

This is limiting my options.I have never utilized the multifamily lending products offered by Fannie, Freddie, etc., so I would be interested to a) hear other BP members' lender recommendations for this sized property and also b) other members' experiences working with Fannie, Freddie, etc.  

However, our research indicates that many DSCR lenders require Florida properties to be held in an entity.Are there any DSCR lenders that offer loans for properties held in a personal name?

Off market and the new the owner used an agent so I reached out to the agent and made an offer How did you finance this deal?

Quote from @Miguel Del Mazo: Nick and Nicole are offering great advice.