Year 1 - 5 unitsYear 2 - 10 UnitsYear 3 - 20 unitsYear 4 - 65 unitsNo need to try to do 25 a year it will naturally scale.

This strategy can work if you are just looking to scoop up a few properties, if you are looking to scale up to more than say 5 properties, you would probably want to look at building new purpose built duplexes, quads or multi units.A new duplex would generally rent for around $1600 / month for the main floor and $1000 for the second suite plus utilities.

@Daniel Haberkost May 2021, Id like to have 3000 dollars in passive income from rentals by that point though so I can dive into scaling the business full time.

Only then will you constantly grow and scale.

Learning how to raise capital and leverage private money will allow you to scale your portfolio much more quickly than if you were only using your own capital.Good luck!

A good TK has enough economies of scale to get you a solid property, at a price that makes sense. 

Lehigh valley is a nice place.I have eaten in downtown Allentown there are some nice upper scale restaurants there.. 

Cash flow is your margin of safety and you can’t scale negative cash flow.

I imagine that the direct mail companies out there leverage these bulk-mail discounts for their economies of scale, but I'm wondering if anyone has any experience with / thoughts on whether doing something like this is worthwhile for more of an individual smaller-scale operation.  

I would recommend a sliding scale, say this year it will be $500, and next year it will be $600,  up until you get to market rate of $800.