If Dave Frank can't help you personally, I bet he at least knows of 5 or 10 others who know this stretch real well. Although I haven't be in there myself, I think you want out very shortly after the confluence. Catract supposedly has some beefy rapids and those Day Trippers are not going to take anything above class II very well.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body. But rather...To skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming... WOW !!!! What a ride!!!!!!"