This applies to all aspects of the business.

Concentrate on those two aspects while also saving up as much cash as possible. 

.- I made the transition from residential to commercial a few years ago and I love it, because of the more passive aspects involved. 

We trust each other and are on the same page with every aspect of this house.

The more complex aspects include circumnavigating the security measures intended to prevent scraping from occurring.

I believe after years of business experience that the system is more important than all other aspects.

I don't plan to ever sell it as it'll make a great rental when I'm done living in it years from now, but the excellent financial aspect of it's appreciation was pure luck of timing.

Can anyone suggest an alternative that can scale from tracking all aspects of a single rehab to X many at a time?

If it were legal work associated with the purchase of the property or negotiating some aspect of the property, then it would. 

Study the following: price of homes with 2/3/4+ bedrooms, RENT for homes with 2/3/4+ bedrooms, days properties are on the market, difference in sales prices for MF & SF homes then start looking at the actual neighborhoods: crime rate, unemployment rate, wages, any growth aspects.