It's crucial to consult with a tax professional who understands the nuances of your situation to determine the most appropriate and cost-effective method for your tax filings.

Which is to say any attempts beyond the method of communication in the profile are likely to end up convincing the landlord you and your friend would be a pain in the butt as tenants. 

Without this foundation any money spent on gurus, courses, books mentorships that teach techniques and methods is WASTED, even if the methodology being taught is valid.  

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

I recommend an electronic payment method.

I see you mentioned the BRRR method, here's a nice breakdown of it here on Bigger Pockets.   

Additionally, they managed to refinance while the rates were at historical lows (and still somehow cashflow negative ik 😭), so any loan methods that involve changing those rates are not ideal.

That method will increase your ROE significantly more.Also read the BP book on BRRRR investing.

Perhaps they invited Jerryll based on his extensive SEO knowledge and did not look into his questionable marketing methods and extremely high course pricing at $5800 and $19,800.