Anything from a credit monitoring service to a credit builder program.

This may be a good option, if you aren't trying to share the access of an existing realtor (most systems monitor/restrict concurrent logins).

That is a reoccurring theme that I hear time and time again.  

I would say about 5 min per month to 1 hrs, and that is strictly to monitor the property manager.

Hiding in plain sight.You mentioned "Rents were pro-forma based on "market" being a reoccurring issue you ran into.  

This year, my immediate goal is to purchase an additional multifamily dwelling (possibly before July) as daily, I monitor the Fed.

Analyze every single house in that market, then do that again.This will help you identify typical houses, prices, rent ratios, tax rates for different parts of town.It will also help you to understand if a market you thought would be of interest is in fact relevant for you.Now that you know what is typical in your market, keep on monitoring and start noticing the things that are a-typical, That's where all the interesting stuff happens.

They've all paid on time, and appear to be good tenants (I'm still in the monitoring phase on if they're bad or good)

I monitor trustee sales and see many great deals go back to the bank.

This shows your team you're actively involved and also gives you a firsthand look at the progress.Use Technology: Leverage technology for project management and monitoring.