If its a home run, then you should probably buy it and remove the tenants.However you could use this as a negotiating tool or put it back on the sellers to remove before you purchase. 

One of the tools they use to determine STR revenue forecast is AirDNA revenue forecast calculator.

.- would you enter this into the BP rental property tool for the $200k with all of it being financed?

I have owned the property for 10+ years and likely has doubed in value since I purchased, so I would likely be able to cash out the appreciated equity in the property leaving my original investment in equity.  

I read these books within about 2 years and it exponentially changed my growth.Rich Dad Poor Dad, Millionaire Real Estate Investor, Multi- Family Millions (Dave Lindahl), ABC’s of Real Estate Investing, The Book on Rental Property Investing, Hold, The Advanced Guide to Real Estate Investing, The Due Diligence Handbook for Commercial Real Estate, Millionaire Real Estate Agent, The Book on Managing Rental Properties (Brandon Turner), The Emyth RevistitedCrushing It in Apartments and Commercial Real Estate, Emerging Real Estate Markets ,The ABC’s of Property Management, Wheelbarrow Profits, The One Thing, Outliers, Start with Why, David and Goliath, Chasing Excellence, Extreme Ownership, The Compound Effect, The Entrepreneur Roller Coaster, Be Obsessed or Be Average, The 10x Rule, The Obstacle is the Way, Ego is the Enemy, Am I Being Too Subtle, 48 Laws of Power, Atlas Shrugged, Man’s Search For Meaning, Sapiens, Tools of Titans, Four Hour Work Week.

Smart brokers will let their agents keep 100% commission on personal transactions because it is a good retention tool which is a win win. 

I tried using the search tool but haven't had any luck so I'm making this post instead.I have the money saved up to buy my next small multifamily property and need an agent to help me find it.

I'm currently learning about the Weighted Cost of Capital (WACC). From what I understand, it is a formula used to determine the true cost (in percentage terms) of financing an investment when using both debt and equit...

Lessons are invaluable and I’m sure you’ve learned quite a lot.

There are quite a few forums discussing properties in other countries, but the vast majority of tools and information here relates to US property.