As you can see by the posts in this thread, the modifications on your car are polarizing. You may find the perfect buyer who appreciates the style (and is willing to pay you for it). You will certainly appeal to more buyers if you tone it down and revert to a more stock look.
'13 M3 - Silverstone II - Sold
'04 M3 - Jet Black - BBS E88, KW Clubsports