Building a prospect list for wholesaling

[Craig Noyes]

I'm choosing to pursue a Facebook marketing campaign instead of a direct mail marketing campaign.  However, i'm trying to figure out the optimal list to build for this purpose.  I'm using ListSource and I know what I want to choose geographically, but the other aspects of the list criteria are a little confusing; mortgage types, demographics, property types etc.

What sort of things should I be considering in building a list to target possible sellers?  What would be the best way to build this list? 

As always, all assistance is greatly appreciated.