Big factor is what the flows are when you put in. I think if you get below 10,000 you should be able to eddy out for most rapids to walk (Rafter's correct me if I am wrong on this because I am a kayaker and eddying out is obviously much easier). Beyond those flows it may be too hard to eddy out, or put you in a bad spot to set up correctly to run the rapid any ways. There are others on hear that know a lot more about this stretch, but it is something to think about. Walking the whole section would likely be a pain and not worth it.
"I plan to leisurely advance through my existence" - Terry Fuhrman 1991