I noticed that most of the SFH with 3/2 are in the range of 400-500 per year with price point around 100K.

Any other connections with people, what to set my range depending on the buyer, anything about bird dog really helps.

This usually gives me a range, because it is historical data and depends on how far back your search is looking there may be some seasonal trends you will want to know.

And my range is about 400k

In terms of rehabbing the property, the workflow can range from throwing a coat of paint on a wall or two, to an entire gut of the mechanicals, windows, siding, and flooring.

The Index captures price movements across a variety of goods and services and is generally considered a wider-ranging measure for inflation as it captures changes in consumer behavior and has a broader scope than the Labor Department’s consumer price index.

Grounding through the receptacle screw is not considered sufficient.

I am looking to add approximately 1-2 homes per quarter and like the price range of 200,000-325,000. 

Your price range is very popular right now so wouldn't be surprised to see 20-100 offers on houses in these areas. 

I'm looking at properties anywhere from $50k-$150k, mostly searching around $100k (SFH or duplexes seems be the homes in this range), with total upfront investment of $40k max (down payment / fees / minor touchup / cosmetic rehab, if needed).