But...honestly, I wouldnt bother to go through the learning curve of laws, leases, notifications,  handy skills, etc unless I was going to do this at scale / full time.    

First thing you need to determine is if the business is at (owner operator) scale or (absentee owner) scale.

Plus we’ve seen the huge increase in price in the last 6 months — properties might’ve gone up even moreThird option is to explore doing duplexes, or SFH instead, so its more affordable today, but i’ll lose the economies of scale of triplexes (which i like)Would love your thoughts on this.

We've seen this broad pattern before, nationwide, it takes a decade or more to pan out, and each time everyone scratches their heads and accts like we've never seen anything like this before (often times there is some unique, event or cultural shift, that comes along and "tips the scale" this way or that, which I think is about the only thing unique to each one):- urban core deemed more desirable (1920s, 1940s, 1960s, 1990s-2020[?])

Just because you are doing something on a small scale with people you know it does not excuse you from following the regulations.

If you're doing rentals at scale prepare to own a few. 

Hello fellow investors, I'm new to real estate investing, wholesaling in particular and I wanted to find out what are the best ways of keeping track of Key Performance Indicators in your business and how are you re-investing in the business strategy as you scale and get more deals under your belt.

This way I can do more deals and scale quicker and keep my cash flow.Good Luck.

With the exception of the handyman who a few times on larger scale work he needed some cash to cover materials nobody asked for cash up front.

All three components can be time consuming, but scaling in the note industry is absolutely doable.