The OP is a beginner.
1) he will be slow and not break his car.
2) he will have an open mind to learn without having his ego in the way.
3) he would save a lot of money starting out with a CCA car control or autocross event, then a track school.
4) I have been to BMW and CCA events and the level of instruction for beginners is not that much different compared to the cost you could do 6 to 10 CCA events compared to one M-school.
5) pros for the M school would be you drive their car/tires/gas/brakes etc.
not sure about east coast but west coast CCA now allows open passing in A and B (advanced) run groups.
if he goes to a PCA event he will be sneered at for having the engine in the wrong end of the car!