If you're talking about the section below Halligan Res, I'd suggest that you be prepared for some non-boating challenges. The streambed is likely to be very choked with willows, you need to tresspass around the dam (and this may be an active construction site now - not sure but there was a project to expand the res), and there are _very_ protective and unfriendly land owners who know there is no legal access to the stream that their property adjoins. This section also passes through Phantom Canyon, a TNC preserve with controllled access. All in all, a pretty run, but for most people not worth the hassles and high likelihood of very confrontational interactions with landowners.
The upper section (middle Cherokee Park to Halligan) is, IMO, highly recommended. This is a very pretty, wildernss run. Mostly class 3 (a couple more difficult rapids), and a very easy small waterfall that you'll be lucky to scout (and it's not likely to matter anyway). It's legal to put in _right next_ to the bridge. There have been ungly confrontations with the land owner at the putin so if he's around don't push it. Call the sheriff if it gets nasty. The kicker for this run is that the road to Halligan usually doesn't open until Memorial day. I think this is DOW lands, and they've changed their access policy and now require some sort of stamp or permit to use DOW lands. This might come with a fishing license, but it's probably worthwhile to check because I've heard they're ticketing people.