Listsource- Length of Residence or Last Sale Date?

[James Ritter]

I am generating a list of 3000 to start my first yellow letter campaign. Here is my current criteria

1) Zip Codes I want

2) Equity 50-100%

3) Value $0-$300,000

4) Absentee (In State and Out of State)

5) Residential SFR

I am a bit confused about filtering either for Length of Residence or Last sale date. What is the difference between them if anything?

Also, would anybody recommend any additional criteria? My strategy is wholesaling a few properties so that I can get more comfortable with the market and then Buy and Hold. I dont want to buy a list and realize I left something really important out criteria wise.

Thanks!