Thank you all for the great info!
A quick look here, and to the links provided, and we're all set with info on tranportation/shuttles, detailed route times/distances, route description, info on water levels, tips like 'bring drinking water', etc. I don't need to ask anything more! And I'll add more if I learn anything, we hope to go on an overnight (MR - WOS) later this week.
Here is the link for the river levels:
http://www3.gov.ab.ca/env/water/basins/BasinForm.cfm
I couldn't read the figure, so looked at a table for MR at MR, it's at 18cms, which will be fine.
Now to rent a boat and organize a shuttle (MR Raft Tours 403-647-3586) . . .
One question: Is there no unorganized camping along the way? Too cliffy? Say between Coffin Bridge and Poverty Rock? If we do MR-PR day 1, approx. 51km or 7-8hrs, it doesn't leave much, 20km or 3-4hrs, for day 2. Or, if we get a late start on day 1 , Gold Springs, 18km or 2-3hrs, isn't very far to go, and then leaves too much for day 2. What are the possibilities for camping just past Coffin Bridge, perhaps at a rapid?
Cheers, P.