Have you determined any of your criteria yet on those projects? 

@KEVIN OTERO Wholesaling in Denver and NoCo is very competitive, but doable if you're determined and put in the work.

It'll come down to your personal finances and you should talk to a broker about your situation to determine what's feasible. 

Note that this was before Al Gore invented the internet (LOL) so info availability was in the dark ages compared to now.

Screen shot of internet speed4.

I have been having a hard time figuring out what criteria each investor uses to determine a class.

Over the past couple of years I've done a lot of research in preparation for when I moved up here after college (I graduated this past May) and have determined buying a house hack on a duplex or triplex in the next year when our apartment lease expires (October 2019) seems to be the best bet. 

Etc, etc.Absorbing information, making short and long term plans/goals, self-evaluating, and studying your market will all help in determining your unique answer to this question.But, in many areas, multifamily provides the best cash-flow. 

These rules, timelines and costs are locally determined.  

Once you start to determine those things, it will guide you to the next steps.