First time you run San Juan, You're going to miss some things. Probably gonna miss 75% of whats down there. That's why you will go again and again.
Especially if you run it in 5-6 days. 7-8 is much better. Sometimes what others have done is not what you want to do. Like "Honnaker" for instance. If you don't wish to hump it up that trail. There's no reason to stay there. It's an adventure. Get the map book so you know where your at. Last minute advice can be givin' by the "Mild to Wild" guides that will more than likely be there launching the Big Blue Dibs. Good Luck, Have fun. One of the greatest river canyons you could ever spend time in.