We've rented them all out by the room so we would be able to see returns in our current market. between how much turn over, scalability factor, current market pricing, local tenant landlord laws, and how much time and involvement that strategy required we've decided we're going to be selling them.

We are big DIYers but will likely contract out most of the bigger parts, for the sake of time and scalability. 

In addition I am planning to set this up as a business and have systems in place for all aspects of managing tenants and a property for it to be scalable for myself.

As Paul mentioned, whether you plan to do so actively or passively, investing in multifamily will offer a greater risk-adjusted return and is much more scalable than other strategies.  

(just no tax advantages or scalability) Good Luck!

Indeed investing in multifamily can be a much more scalable strategy.

It is one of many reasons why a lot of people say Single Family isn't scalable. 

I have been researching different ways and the BRRR strategy appealed to me the most because it seemed the most scalable way to me to build equity and a rental portfolio.

I'd be happy to talk about my experience with Hemlane so far which has been overall positive but not scalable. 

In my opinion, anyone looking to earn $10k per month or more from rental cashflow should skip single family and go straight to multifamily investing because of the scalability.