ran my CRC carpet knife for the 1st time today

i liked it a bit better than my RC12L3 - without traction compound, the CRC handled just as well as my old RC12 with tire sauce

also, the kydex front bumper and mono-ball suspension kept me from the usual broken front lower arm and rear t-plate. im still looking to improve the handling - im gonna experiment with tire sauce and different rear springs next time.
carpet knife owners, what usually breaks in the car? what spares do i need? im looking at stocking up on potential parts to break since the LHS that carries CRC products is a bit far from where i race. though the track's hobby shop has RC12 parts so i can get front suspension parts.
in my opinion, the weak point i see here is the mono ball mounting (carbon fiber and plastic) and the one-piece rear links. although i had some pretty strong board hits, none came loose or broke. but im sure that over time, i will break something (as i regularly destroy my RC12's front arms and t-plate

) is the rear suspension assembly tough enough so that i dont need to get spares? thanks for any info