RE: final 400 climb. I did not rope in. On a trip years ago I went with 3 others and we roped in. They felt more comfortable doing it that way. I suggest you look at pics and some videos from this forum to see what the final 400 looks like. That would help you determine how you would approach the climb. FYI depending on the chute and route, some of it is class 4 and with some exposure.
As far as camping. Upper Boy Scout lake is nice spot with easy access to water. Iceberg Lake is also good but is more exposed to the elements, a bit higher up and has easy water access.
