Organization is hard

It really makes no difference what-so-ever how much I try to plan and organize for our trip to Iowa in August I never feel like it's enough. I've created a shared Google Calendar with the hours and locations of all research centers we'll be visiting.  I've contacted several people from various genealogical societies in the counties we're visiting.  I have a Google Spreadsheet with major questions we need to answer which is broken down by counties.  I have a huge binder that I'm not even going to go into how much information I've put in there all organized by surname.  My final step is to get my laptop ready to go.  I know I've done just about all I can but it still doesn't feel like enough.  How many times do you get an opportunity to spend a week researching the archives looking for answers to mysteries you've wondered about for years?  Not very often my friend and I don't want to blow this one.