I keep all my outdoor gear in specific tote boxes except clothing items that serve multiple needs.

I like to start buying food stuffs and have all that ready well before a trip.
I do check/run my Peak 1 stove before a trip because last thing I want is too play stove mechanic in the woods. :( Everything else is always repaired after a trip before being packed away.

I lay out my intended route and pack the necessary maps in case along with the overall park map incase I decide to really deviate from planned route.
I don't mark campsites unless I read on the QJ there close to good fishing spot.
Same with portages. I might read the trip reports but as we all know, like campsites they can really vary from one paddler/season to another.

Too much info at least for me takes away the joy of discovering someplace that is brand "new".