a lifelong painter freind told me to cut and buff the day after painting with 2k. it is still hard/cured but not fully 'set', it gets harder and harder the longer it sits making the colour sanding similarly harder and harder. how many body shops wait months after applying paint before cutting and buffing? errr..... none. :lol:
your car so of course your choice but personally i don't like making things hard for myself if i don't need to.
neil.