I'd do full front hood and fenders, and skip the rear. Look at a price increase to about 1200+ though, some places in so cal for that type of work (wrapping around edges, not cuting to them, removing emblems, not cutting around them, same with side markers, will be in the 2K range. Have to pay for quality up front, but its a one time thing instead of having to go back and redo things...whats your time worth?
damage on M3's rear bumper is next to non unless tracking the car and getting sideways from time to time. At least out of the 50-60 that I have detailed in the last two years that is....