In priority order
1.YES-Ferric 87s
2.YES-Aerokit
3.YES-Facelift
All free if you can .The ferric 87s,with facelift and Aerokit ..perfect.

Personally ,I dont think the aerokit in photos does it justice!Real life,it looks great ,especially in black ,it doesnt look so bulgy and blends in nicely.
With the ferric 87s its perfect.
You just need to look at the Russian movie of a black X5 with aerokit!