Sight unseen, a Redshank is a great boat. It's an Avon after all(not meaning to sound redundant).
I saw John Garren(RIP)(author of many western river guides) run a Redshank down the Middle Fork at fairly high water in about 1982.
I saw Chris Brown(famed western photographer) run a Redshank down the Grand(late 80's????, maybe later) including Horn Ck at an extremely low flow(around 2k weekend flow, very impressive).
I've seen the Redshank do very note worthy things. But it would not be my first choice of boat, especially at certain flows and certain sections of the Poudre.
Have fun and as away's, be safe(Again, not meaning to sound redundant).