Just make it easy for people to want to invite you into their worlds, and that's what you're doing.

You get distracted and wait until 7 days before closing to ask for the payoff letter because that's plenty of time to email over a pdf, right?

I do a lot in Detroit, and $150k is plenty to do most C/C+ SFH's and duplexes. 

I recommend TransUnion Smart Move, but there are plenty of other options.

Plenty of good responses here @Tiffany Robert’s!

Places with plenty of road frontage.   

They come with fantastic insulation between the floors, extra parking on the side with a separate entrance, their own laundry, and plenty of bedrooms up & down.

I didn't want 100 doors. 10-12 was plenty for my plan.There is some truth to economy of scale. 1 in my opinion is harder than 3-4.

I did have one issue that was disappointing that consumed a lot of time: After sending an invite to an applicant for background screening, the applicant somehow was able to register as a landlord; that was discovered by the RentPrep team after a considerable amount of time and delay.

Whether you do that or not I don't think that will solve your problem (and I would generally recommend against it if it's a decent property as lots of Section 8 units together concentrates poverty and can bring a property down; yes there are plenty of good Section 8 tenants but we're speaking in aggregates here).The big thing you need to do is find a way to get all of the problem tenants out.