I'm planning on redoing my first ever backpacking trip from prince creek to stehekin heading up into the mountains in between. I think 5-7 days would be enough time to enjoy it properly with maybe one night in stehekin, the burgers and beer at the lodge are a religious experience after some time in the backwoods. It'll be late July or august. I'm hopping a train from spokane to wenatchee then there's a bus from there to chelan for the steep price of $1 then about $30-$40 round trip for the ferry to prince creek. I wouldn't mind some company if there's any takers. It's a spectacular trip and the reason I fell in love with backpacking. There's some good fishing and swimming to be had too.