Everything been said is great! My only suggestions to add; forget night action until you get the hang of it. You can't focus on catching fish if you believe your life is in danger. Fishing cloudy, rainy, gray days, preferably warm and with a S, SW wind is a great way to find stripers when you can actually see where your walking. Sunrise and sunset are good bets as well.
As for gulpers and worm hatches, would you send a first time trout fisherman to the Beaverkil with #28 dries during a Trico hatch? If you really like standing in one place and trying 100 different flies without a touch while huge fish wallow all around you, the worm hatch is for you [you might like those tricos on the Beaverkil as well]. Your luck should be better in Oct. as the fish put on the feed bag for the trip south. And don't scoff at the schoolies, you might have caught bigger trout, but could you catch 30 or 40 in an hour? Once that happens your gone. You'll never look at trout the same again. Email for a current report when you come in Oct. If you live far enough away, I might share a secret spot or two.