They seem very similar in that they handle emergency and non-emergency maintenance calls and, critically, even dispatch contractors/service-people with minimal intervention from me.

I think those are critically important. 

The real benefits are that you'll learn a lot, grow your network and meet a ton of subcontractors (this is CRITICAL if you want to be a GC), learn the construction process, and (like Bruce said) if the GC likes/trusts you they'll probably sign off on the experience even if you're still a year or two short.

I’m not sharing it to criticize the site owner, but rather to highlight how small mistakes can cost you money when advertising on Google.

You will not succeed as a real estate investor if you are fragile in your response to criticism.

The walkthrough can play a critical role in determining compensation.

I work with a lot of house hacks & investors like yourself, so getting it right on the first one is critical. 

Great response here from @Michael Plaks (to what was a very long post, this is critical info).

Your local partner can help verify if the area really supports those rents long-term.Regarding school ratings, they’re important for single-family homes but may not be as critical for duplexes, which tend to attract a more diverse renter pool (young professionals, retirees, etc.).

Would mobile app access be critical for tenants?