Very good strategy. I use a similar strategy for base notes when playing against "new to me" players, but I use more personal play notes when sitting at a table with someone plus a HUD. Looking at a person's stats are definitely great for establishing whether someone is "bluffable" or not though. Good players are thinking players and pay attention to your play, so if you are paying attention to your own shown down hands then you can use that to your advantage against them.