First of all - buying yourself an M3 for your 40th - congrats and well played!
I would say - if you are ordering or the car you are looking at one in dealer inventory with it, as well as the other options you want - take it! Price seems right for some pretty neat technology.
I bought my car out of inventory - that was equipped the way I wanted it, but did not have EDC - so I took it and have no regrets. Having said that, if I ordered I would have taken it, because really why not.