At the risk of turning this into a detailing thread, if paint has been applied by a reputable bodyshop, and the paint cured in an oven, you can polish and wax it the next day, and achieve a perfect finish. Carnauba wax, a decent carnauba wax not containing synthetic fillers like Autoglym, Meguairs, etc, will let any remaining outgassing occur without any issue whatsoever. Only if you cannot ascertain the above, would you need to consider leaving it any longer, otherwise 2 months, or even 6 weeks delay is completely unnecessary.
As for applying suction cups, yes it can leave marks even on original paintwork that has been finished for a long time, but I've only seen that happen once and I've used camera mounts on quite a number of cars for hours at a time.