They have a high hassle factor and he sold most of them.  

If you can do short term, mid term, or rent by the room, your hassle factor is going to increase, but you may be able have it both ways - more property and still cash flow.There is no wrong answer.

A factor is whether the panel and electrical can handle the additional load.

Focus on factors like affordability, growth potential, demand, and landlord-friendly regulations to guide your decision.Good luck!

what factors should I be looking at when making this decision.  

I have been playing the multifamily game for almost 10 years now, and the GRM is one of my least favorite methods personally since it ignores so many important factors (steam boiler versus electric baseboard heat as an example). 

I still think this is just like factoring accounts receivable .

Based on the quality of this particular home, my rent estimate may be low.Note: you have to consider other factors.

A strong “Core 4” can make managing your investment remotely much smoother and prevent a lot of headaches.Also, as you narrow down cities, pay close attention to factors like job growth, population trends, landlord-tenant laws, and short-term rental regulations.Happy to connect with you, and good luck as you jump in!

And in part, it depends on the investors and capital that you have access to (this tends to play a factor in many decisions when raising outside capital).If you do want to go the fund route, you might want to consider using Avestor.