All systems are "go" for me re: Praxis MF F 6, so here goes!

Systems don't work if there are any exceptions.

Get a system down to quickly filter out the deals where the numbers don't meet your criteria.

Energy Efficiency ImprovementsInstalling energy-efficient windows, doors, insulation, and HVAC systems can appeal to modern buyers who want to reduce utility bills.

Assumed nothing could possibly go wrong in the next 5 years what you want when you look at an investment property is to know the current rental amounts, specific expense items, and conditions of the building, grounds, and mechanical systems.  

Once the interior was stripped and the infrastructure tested, I brought in commercial contractors to handle critical systems like plumbing, electrical, roofing, and HVAC installation.The house, built in the early 1900s, was originally a coal-burning residence.

Systems.

I think the real magic comes in when you develop a system that allows you to create these cash flowing rentals from the vast number of vacant homes in the inner city. 

Since you’re planning a mix of long-term and short-term rentals, keeping detailed records and setting up a solid system for managing finances early on will be key.

They used that period of unemployment to skip paying student loans and then try to get some kind of program/hardship deferral or something aka "gaming the system".