The Source is not an Intro to Creeking creek
Let's not lose sight of the topic here- there are pin spots, micro-eddies, and some wood in this drainage, not to mention cold water that can rise relatively quickly. The creek is, for all practical purposes, 1 boat wide & consistent in gradient so running against the back of one of your team is likely if they get pinned. Not a easy place to evac an injured person either. Go with a guide after you feel very comfortable on other small-volume streams - Bear Creek might be a good test. Important to note 400 cfs may be the gauge reading, but the flow at the takeout would be significantly lower.....
It may not be "manky" as compared to some other runs around the state but it ain't that clean, either.