Glad you found the info useful. If you get to FishWatch, be sure and tell Lee I said hello. I need to send him a note anyway, and tell him how my last trip finished up. He laughs at my particular dry fly (he, too, is a dry fly fisher), but my dry has been so very good lately that I want to let him know! The best time for viewing the fish in the pool is early to mid afternoon--that is when the sun is on the water this time of year, if there is any sun, and Lee makes a point of usually being there at that time for visitors (he's usually there anyway, though).
If Joan is going with you, my perhaps most important advice is to have dinner at Steamboat Inn. The atmosphere is friendly (although it can seem a little odd first visit), the food is fantastic, you meet interesting people, and you can usually talk an appropriate amount of little fishing (not too much for non-fishing spouses), depending upon time of year. My wife and I honeymooned at the Inn, and returned every year for our anniversary for 8 or 9 years. Jim Van Loan has a wry sense of humor, and Sharon often had gifts for our kids. Our finances with kids have suspended our stays there though--we now just show up for lunch occasionally when we're camping on the Umpqua.
I look forward to your report back after your next visit to the Umpqua.