Your BS Meter is not properly calibrated. 

A reasonable approach is to calibrate your payments to retire the notes over your working life, so that you'll have the full NOI available to you as retirement income.Most would advocate building in a vacancy reserve, and to buy assuming that you may need a property manager some day.

I did notice that in my version of the epub, some the illustration (latter int he book) are not there.You can use Calibre (a free package available at https://calibre-ebook.com) to view the Epub format and convert it to different formats.  

We should meet and calibrate on some ideas.

For example a townhouse you may want to buy to rent in calgary would cost 5-600k yet rent for 2500/month (if you're lucky enough to get a tenant of that calibre they can easily buy so why would they rent).

These 3 things correctly calibrated and dialed in can take you from struggling to #1 investor in your market.Not saying it's easy.

All of the cash over time with no discount to faceIf you do it this way you can calibrate the discount and pay him both his profit and down payment back.

Great for doing market research / comping potential properties and calibrating potential top line performance of specific properties. 

Late rent, skips, and other effective vacancy items like "free rent" for a certain time period are indicative of lower class properties where the proper adjustments need to be made to calibrate the NOI properly.

More leverage in the highly-leveraged portfolio could be calibrated to yield the right amount of income from your other portfolio to sustain whatever lifestyle you want.