[BSchrades]

I'm ready to build and buy a M50i. I had a 2012 X5 35i previously and loved it but I bought it at auction. Any tips on the best way to approach dealers? it seems some people are starting to see around 10% off MSRP. I live in Iowa but I could pick up in Chicago or Minneapolis pretty easily. Below is my online build and assumed discounts:

Carbon black metallic
21"
Coffee extended
Fine wood ash
Premium package
*No need for DHP, I live in Iowa
Driver assistance professional
Leather dash
Heated seats & steering wheel
Shadow line trim

BMW online estimate:
90,000
-7,200: Off MRSP (Guessing I can figure out how to get 8%)
-1,000: Employer discount
-1,000: BMWCCA
-750: BMW credit
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80,050