AG M621 FF for F80

[M3Fanatics]

Hello I'm thinking about getting the Avant Garde M621 wheels for my F80 they are flow forged and weight similar to stock wheels I also want to do a custom finish, the only issue is that I am thinking about going with 19x9.5 in the front and 19x11 in the rear while keeping stock tires will that be ok as I won't track the car or will the rear wheel be too wide. Keep in mind ill be getting 285 and 305 or 315 in the back once its time to replace the tires. Please chime in let me know also if any vendors can hook me up with pricing for level 3 finish!

Thanks