What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Of course there's a bit more to every build and budget will ultimately decide where you end up developing.

Of course, that means she'd have to turn around and buy something else. 

I am going through the pre licensing courses/ process now.My rough plan, as of current, is to begin flipping homes in desirable residential areas nearby and then move to flipping in the mountain/vacation setting.

While getting your license has benefits and creditability most brokerages are not investor-focused. 

Open to anyone willing to make the trip of course, but likely folks from the Kanto area - Yokohama, Chiba, Saitama, Kanagawa, Ibaraki, etc?

Making judgments and gaining important insights from experts with experience in your target market may be achieved through networking.You may confidently evaluate your possible investment and choose the best course of action for your financial objectives by carrying out extensive due diligence and making use of the information and tools at your disposal.

What I would suggest alternatively is putting a clause in the lease that anyone above the age of 18 that's going to be living in the unit for more than 7 days has to be approved by the landlord and pass credit/background/income check etc. 

Good credit, good job history of 14yrs with the government.

First, I was unfamiliar with Veena Jetti, so of course, I had to Google her.