Couple of thoughts:
1) Those tire tread depths aren't correct. New, they would be 10/32s.
2) The 265/35-19 up front will likely rub the fender liner as it is two sizes larger in diameter than stock fitment. The 275/30-19 example shown that is rubbing the liner is actually smaller in diameter than the stock 245/35-19 by a bit. In other words prepare for potentially major rubbing issues up front.
3) The PS4S thoroughly trounced the Pzero PZ4 in
Tirerack's testing.
4) New EC-7s in those sizes are $1390 right now as they have the front wheels on sale.
5) Check the TPMS they have installed compatibility with the E9x M3...I doubt the F8x TPMS work on the E9x, but I'm not sure.
I'd opt for buying new in the color you want, but if not, make the deal without the tires.