why not get sport rather than MSport. I dont wear gloves so heated steering wheel is well worth for guy like me. I like all MSport options but Sport has options which are very imp for me so I will probably choose Sport till they add heated steering wheel and/or PDC all around to MSport. Ride harshness on Boston roads shouldnt be bad for X1. Make sure tires you choose have good amnt of sidewall.
My car has Style 195 rims (10 spoke) and still got 2 bends and 3 bubbles. I dont think no of spokes will help you in reduction of wheel/tire damage. Sidewall should make a big difference
Good luck with your purchase.