I like your build too!
The one thing I would question is the steering wheel, and make sure you check out the 18 ways if you have not already.
I think a lot of it depends on how long you think you will keep the car. If you flip cars every 2 or 3 years, you will pay dearly for the depreciation on some of the options. But I say if you will keep the car 5 years or more, get exactly what you want and don’t look back.
I think the 21 inch wheels make the look of the car but no question they are not cheap.
And I also think another $2000-$3000 off the price should be achievable.
'16 Turbo,Sapphire,Black Leather Int/Sport Classics/Window Trim/Roof Rails/Xenons, PDLS+,Tinted Tailights,Sport Design,PSE/PTV/AS/SC/ACC,Burmester,Prem/Comfort Lighting Packages,Leather Dashboard Trim,Seat Console,Steering Column,Rear View Mirror and Sun Visors, Leather Interior Trim in Pebble, Pebble Seatbelts, Headrest Crests, Armrest Logo, White Dials/SC Clock, Alum Fuel Cap, Spt Design Mirrors, Surround, Connect/Online Services,Painted Key,Leather Keypouch,Illum Door Sills