Timing is everything

It's interesting how, when people have various options in front of them, the conversation moves quickly to a conversations of which. Which is right, better, best?  

As valid as this conversation could be, many times it's smarter to have a conversation of when. When would options be most optimally feasible and valuable? Do some need to happen before others? What would be the best sequence? Are there opportunity or resource timing considerations for when any should best begin or complete?