73

100 day plans are overdone.

Especially when folks use 100 days to mean 100 work days of the 200 available, assuming 50 working work weeks.  So 100 days - already a cheat on a quarter - becomes 6 months. 

And that's just to get a plan in order?

Reject that noise. 

You've got 73 days to kill or fill.  That's 5 plans in a year.  Allow yourself to continue for 3-5 months total if it's amazing.  Otherwise move on.

Set real milestones externally, earlier for your team and earliest for yourself.

Factor friction into the plan.