You've got some time, I'd avoid the blown Ibeam too. People have hardly started trying to get rid of stuff yet, gear will be posted more in the next coming months. If you buy something that has problems now, imagine how hard it will be to turn it over if you decide you want to upgrade. Don't be desperate, it's only March!
Are you checking the NRS gear swap, the classified ads here, and also the ads over at Boatertalk? You might also post on some of the yahoo groups what you are looking for. I was amazed when I first posted about looking into buying a cat. Within a week of saying I was looking into a set of used tubes, people started contacting me with the same thing that they were willing to get rid of. A lot of folks sit on their gear instead of post it. Get the word out on PDX kayaker, WRRR, and Idaho whitewater yahoo groups, perhaps also the Utah one. Tell people you are looking and they might decide it's finally time to unload the boat they have already replaced.
I am a river, babe - I've got plenty of time, I don't know where I'm going, I'm just following the lines..... - "We are water" by Shaye