In million dollar plus, you need to put much more thought into everything from paint choices to lighting fixtures, to plumbing fixtures, countertops, and appliances.

I have not used Michael Blank’s coaching, but bought into the Ultimate Guide to Apartment Buildings which is a 4 figure cost and includes a book both audio and typed, some deals (not necessarily purchased) reviewed in his deal analyzer by video, access to his mastermind group and deal desk, lifetime online support and other odds and ends.  

Consider adding Skylight to bring light into the room BEFORE you close off the window.btw: color is drab IMO

You skip the drunkness and benefit from light traffic so you are able to complete a lot of trips in a very short amount of time.

As a former NPS employee I can shed some light on how this process works.  

A fixed piece of glass or painted piece of plywood (if no light is needed) would look much better and probably be easier to install...

I am only targeting properties that I have more than enough to cover 20% down, closing, and very light rehab.

I view this as a light version of house hacking.I am moving to the Plymouth, NH market.

We were in a similar position in that we were cash-light but being able to take down a four-family for < $300,000 made everything workable. 

It needs light rehab, but all new plumbing, kitchens and baths.