As it stands now, I am going to renovate the apartments, the tenants will pay me and I will communicate with them directly about all issues with the property etc.

The main issue that would scare away buyers is that there is a lot of debris (couches, household contents, ect.) that have been basically thrown in a pile in the front of the house.

I've been looking for some rules around this issue but it's very vague.  

The only thing missing is action.You'll learn 20x more by taking action than by reading a book or listening to a podcast which are always general knowledge that gets repeated over and over.Once you dive in you will start to come across specific issues and problems you didn't even know existed!

I'm looking at the protocol to register and then have the safety and lead risk inspections, fix any issues and ultimately get the certificate of compliance for 3 years, then repeat.

The biggest issue we are running into at the moment is finding a profitable multi-family unit and how to fund it.

Investigate rental revenue prospects, market trends, vacancy rates, and regulatory issues in possible investment locations second.

Managing STRs involves guest communication, coordinating cleanings, promptly (like, within an hour or so) handling any maintenance issues - it's completely reasonable that their rate is higher than that of a LTR PM.  

This seems to me to be a typical cart before the horse issue.

@Kyle JosephThere are plenty of models out there.Many are free or low cost.The real issue is knowing your market - rents, vacancy rate, expenses etc.The magic is NOT in the model but rather the data one enters into the model.Agree with @Chris Seveney