Well I've been in the process of ordering one since September 24th and only given a confirmation date for production last week (March 11 production week).
As for the 3-door vs. 5-door, I honestly do not understand their reluctance to order one. My M135i will be the first one, therefore there is no standard that the dealer has, and even more, they didn't know the car existed until I asked them about it.
As for the price, they told me the same thing, the final price will depend on the exchange rate at delivery. That's quite standard when they're ordering a car for you.
I'm happy for you that you actually got the 3-door. I gave up and opted to go for the 5 door since it's more practical (albeit without the frameless doors
). All in all, I don't think I'll be disappointed when it arrives, I more than made up for my disappointment with the options list!