As mentioned no need to hire a private investigator just use an online service to do a background check.

Check out other online guides available here: https://www.biggerpockets.com/guides3.

Ultimately, location and demand will play a big role in how it performs.

Thats what I would do next and you can really just see what the numbers tell you (and look at different rate/refinance scenarios how it would play out in the next few years)

Fast decision-making played a crucial role in this successful deal.

I don't know your criteria for a good deal, but if you're strictly looking on market for a quad in Raleigh you likely won't find one in the near future that meets what you're looking for.I have been looking in both Raleigh and Charlotte for the past few months and I barely came across any good deals at least online.

Check out other online guides available here: https://www.biggerpockets.com/guides3.

They got in the game when rates were low and it was easy to find cashflow plays. 

If not from CT and there's any networking events or groups online - id love to hear which groups you recommend/ webinars . lastly, any advice on how to properly approach investing professionals as a beginner - would be greatly appreciated. 

I would play along and let the neighbor know that you are sorry they need to sell their home for these health reasons and offer to buy it for half what its worth.