Most who possess both attributes recognize its more profitable to simply build for themselves which leaves very few qualified builders for 4 unit ground up projects and those who are truly qualified have to be incentivized monetarily to take on such a build which cuts into your margins.

They are more than qualified, just don't want to go through the vetting process.  

I also keep a running list of available properties that qualify as STR properties for buyers.

There is a fairly new 20% pass through deduction you may qualify for that could help you, but not everyone qualifies.

Yes - you should be able to find a lender that is "AirBnBRRRR" friendly - most DSCR Lenders will require the full 12 months of STR history but a few that specialize in STR can qualify less than one year, typically with AirDNA projections or some common-sense mixed underwriting approach

It sits on their credit report for up to seven years. it's a warning to other landlords and prevents them from qualifying for a home loan, car loan, or credit card.I've had some tenants sit in collections for years, then pay everything they owe because it was stopping them from doing something.You should consider a new PM.

Because of how my Schedule E is with all of the write offs, it throws off what I can qualify for.One thought I had was start purchasing under an LLC and have the LLC take out the loan.

There’s a bunch of qualified brokers that can help nationwide 

I agree with this statement and you're second-next step needs to be getting qualified/finding money and walking properties.

If you insist on going the path of becoming an agent, I would try to qualify for a loan (or find a creative way to finance) prior to leaving your current position.