First, this is NOT sanctioned by BMW. You risk getting the dealership in trouble, and no dealer here will help. (SOmebody may snitch..)
At 3-4k the CPO isnt worth it. Contact Daniel at Pacific BMW and ask what a Platinum or Gold plan will cost...
Skip the maintenace plan- overpriced for what you get. Find an indy.
Keep it as simple as possible...but no simpler.