IMO there are 2 options that could both work very well.

1: Let them be facc untill decent level and go straight to barbarians/wyrms/tortoises whatever is working. (good cash from the very first days of pacc)

2: Buy pacc from the begining and do the tasks, to maximize your profit on the lower levels. (abit manualling to kill bosses etc, probably need to make ur own scripts)
@Linty