Seller financing rarely has access to the credit system.

With 100 properties owned, with a regular property management you're still looking at at least 5 hours a week to manage them if you have good systems in place. 

Your first hire is unlikely to work out though, was you won't have a good hiring system in place. - So, recommend having that first hire document the crap out of what you want them to do.

Upgrades include a fully remodeled kitchen, renovated bathrooms, new durable flooring, contemporary fixtures, and efficient heating and cooling systems.

But, for instance, I sent them a notice of rent increase effective February 1 and needed them to confirm that they have accepted the new payment terms through our electronic payment system, and even after repeated notices, they are not responding.

A third party company that integrates with our system.

It was one of my first claims and I learned how their claim system works and never failed again. 

These I have found are real, striving parents, working their butts off to provide the best housing and school system for their children.My ethos in this approach is exactly why we at LaPlante refer to them as Residents, as we consider "Tenant and Landlord" to be dated terms and rife with negative emotion.

I would love to understand what criteria your software is using to eliminate 99.6% of all properties.Congratulations on developing a hybrid system that works for your company!

It's how you document, and not how you "think" the system works that gets you what you want.