I will likely invest in other areas and just rent a beach house when I want to go, at least for now.

In that case you could live in one (assuming you qualify of course) using owner occupied financing on that particular property and investment financing on the other three. 

This past week I've invested some hours after my 9 to 5 (between putting the babies to bed and my own bedtime) into a tool that would help me understand the impact of refinancing, depreciating or selling my LTRs.

The main issues are: 1. gross revenue has been less than half the projections the PM initially provided and what is on AirDNA, and 2. gross revenue has dropped 30% from last year to this year despite me investing over $125K in improvements (new pool, new fire pit, new landscaping, new dog yard). 

How are you navigating this slower period with your current investments?

You came to the right place to learn more about real estate investing!

I’ve been interested in real estate investing since I was a teenager.

I file my taxes in Florida and am considering setting up an Investment LLC, a Property Management LLC, and possibly another LLC for short-term and mid-term rentals.

Gotta admit, I'm pretty impressed.It's not specifically for real estate investing or anything, but it does have some features that let you model rentals as part of your broader financial plan.

I would focus on raising your income up before doing anymore investing.