Need to pull your car out of the equation, sell it and then go find the next one... unless you're willing to take the potential loss on yours.
Its impossible to negotiate a great deal with both cars in the equation fwiw.
'13 E92 M3 - SG/FR ZCP 6sp with sunroof *and* wood (old fart edition). MPE. Turner 10mm spacers x4.
Born on 07/04/12, PCD September 5th, 2012.