I would offer them $925.00 including tax then and see what they say. Tell them that they will still be making about $304.00 and some change. Let them know that you will buy the matching center and rears from them too (if that is your plan to purchase those at some point).
If they don't budge offer them $950 including the tax. If they won't do it tell them you will find a dealer that will and you know they are out there.
Start at $900 including tax and work up in $25.00 increments. If they want your business they should do it by the time you get to $950.
By the way, with B&W as protected as it is getting them for $925 or $950 with tax included is a very good deal considering how new the model lineup is.
What am I doing?

I sell products and I am giving you advice on how to barter.