"Am I seeing the RSVP right that 9 people are going to make this?"
I am wondering the same thing...and I am thinking of going as well...but 9-10 vehicles is a lot on the sections above santiago mine. There is no real parking for that many vehicles at the top or either Argentine or McClelland. And both upper sections, especially McClelland, its a pretty narrow shelf road without much room to pass. Thinking the group might consider splitting up at Santiago, with some going up McClelland and some going up Argentine. Could also split up at the bottom, with some going up via the more challenging creek route (technically McClelland) and some going via the easier old railroad grade (technically Argentine) - they run parallel to each other.