For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

Can be a good strategy, but my understanding is BRRRR is generally dependent on refinancing and pulling back that cash invested to repeat the next one

Why do you have 24k in cleaning fees as expenses for an STR?

If you purchased this property with conventional financing, then as already mentioned 12 months is needed to pull cash out. 

Been doing a ton of research on REI over the past few months and am ready to pull the trigger next year.

We’re open to offering a consulting fee or hiring for this expertise.Any advice, resources, or referrals are greatly appreciated!

Forget about the late fees and payment plan, you'd be lucky to find any judge who would enforce it when the tenant showed they weren't even living there any more and were still doing their best to pay off the balance. 

I pull all my copies , approved plans from the county , footer inspections , final inspections , AND I found a copy of the code from 2002 . 

I am curious what is a market correct "finders fee" for bringing the company deals we are able to close?

Do the Airbnb discounting, price a little under market, make sure your cleaning fees are at or below average, looser cancellation policies will all help.