Having a plan A and plan B is important , but having a plan C&D as well .
” All plans fall apart at first contact with the enemy ”
Erwin Rommel

That also applies to a SHTF situation on any level . I think the ones that are going to have the best chance of making it are the ones that can be flexible and roll with the punches as they come . Things may change by the hour , being able to adapt to those changes will be a challenge . The bigger the group , the more challenging that will be , as everybody will have their own ideas of what is best , and some people will handle pressure and adversity better than others .