It wasn't until I hit 6K per month that I got consistent and quality responses that I could reasonably make a living at.3) I don't do yellow letters as I believe that market is saturated here.

I'm not sure where you're at, and if you live in the area you probably realize this, but close to downtown st Paul there are vastly different quality neighborhoods right next to each other. 

Their goal is to not find a buyer the best quality property to buy.

The issue I ran into was the materials that he wanted to use, didn’t always fit into my idea of the design or quality.

I find that, at least in my area, the older construction is of greater quality than new stuff.

. ;-)Of course, what business do you call that dosent let the caller  know "They are being recorded for quality and training purpose?"

I got a list from the county, with over 6k + names obviously i need to scrub off land and other properties but how do I make it compact and high quality list

A while ago I would listen to real estate investing audio books while on long drives required by my profession.

Maintain your properties condition in line with the quality of tenants you want.  

Some are successful which is VERY dependent on the area if the country re quality of renters.