Below are invoice prices
Base $33,810
Sparkling Bronze metallic $500
Black Nevada Leather $0
Fineline Siena wood trim $0
Convenience Package $1,685
Premium Package $3,140
Roof rails in Aluminum Satin $230
Park Distance Control $685
Rear-view camera $365
Destination & Handling: $875
That would be 33810+500+1685+3140+230+685+365+875 = $41290 (Without taxes, plates, doc fee etc..)
So I would try to get it below $41750. (Around 500 above invoice), anything beyond that I would say you look for other dealer, even out of state, you will be surprised
. As well look for dealers in state or out of state who charge less on documentation fee, thereby you can save some there.
I got tire and wheel protection for around 1160$, so would advise you to get that and heard from friends that it is worth money.
Keep in mind about X3 Driving event and you will save another $500 there 
-S