The others are all good for free but I like the Zillow presentation, contacts and data.I had an applicant last year who used the Zillow application and I would love to see more potential tenants do that.

Still viewing homes virtually (which presents challenges), nonetheless still looking to build my portfolio.

So the visual presentation will really be important.

While you presented viable options, I agree with @Mark F. - if there is a way for you to buy this property for yourself and get FHA, go for it!

This guy presented wrong information about the property in terms of square footage, number of rooms, left off the second rental unit and came in $350K less value than the previous appraiser had given with apples to apples comps. 

I perform this analysis for my clients all the time.From a high level, the yield maintenance calculation is ((Present Value of Remaining Payments + Present Value of Balloon Payment) - Principal Payoff Balance).

City Code Enforcement: Properties that are consistently getting warnings and citations for failure to care for their property could easily be rentals where the landlord is over his head and would take an out, if presented, but can't afford to fix up the place to sell it.

Also, I think if you get good at learning how to evaluate deals (learn how to use the Bigger Pockets Investment Calculators), you can actually start to print and present these reports to potential friends or family who might have money to invest.

The numbers makes sense but I can't make heads or tales of whether the data presented is good,  mediocre, or terrible.  

You can view properties yourself without literally having an agent present to unlock a door for you.