Like many (most) businesses it requires an investment of capital; money expenditure for ongoing marketing; management of operating, marketing and professional personnel; keeping accounting records and filing tax returns; established sales practices; constant monitoring of goals, budgets, and productivity; establishment and implementation of operational systems; and providing customer service.  

Could I put down 100k to get a 400k DSCR if the rent is 5k/mo since it's enough to service both debts? 

Some of the options I saw could use your services  

Is the property debt servicing at a 77% LTV? 

first off there are very few lenders that actually own mortgages these days its servicing companies that own the vast majority.

You are already off the articles of incorporation since the Wyoming LLC is established first through a registered agent service.

Always enjoy helping fellow investors.Start with listing your services in the variety of directories such as connected investors, privatelenderlink and so on.

You now have to sign a binding agreement with your agent stating how much they will be compensated for their services prior to doing a showing.

So I own a triplex with 2 of the units being managed by a PM and used for Airbnb and myself living in the third and I have 20% equity. In the near future id like to move out and purchase another similar property but I...

No, you can refinance with anyone and likely the current "lender" is only the loan servicer as most primary residence loans are resold.