Is the warranty the BMW OEM Extended Warranty or a MBI from a 3rd party? Since the deductible is $100, I'm guessing the latter.
See my repost of my respost here.
I'd also pass on the full ceramic coat. I dont trust a dealer enough to ceramic coat the car, as trying to correct any screw up is going to cause more pain than it's worth. If you want a ceramic coat, take the car to a respected detailer.