CDCFLY, I like Dave Frank's advice. Browns is a fun place to get some class III experience. The Eagle from the shit plant into the fairgrounds is another. Run those a few times and you'll get the hang of it pretty quickly.
When the flows come down, Browns slows down so you have more time to make the necessary moves too, although there are more moves to take. We take the kids on Browns in the summers because it's a fun, splashy trip that's relatively easy with some experience behind the oars. You can even make a weekend out of it by camping at any of the several camping areas in the area, and running laps on Browns.
Shoshone will also be a lot easier later in the year when the flows come down, so you can get another crack at that one when it's like 1500 cfs instead of 7 grand or whatever it was. We do that one sometimes with the kids too, and now do it in the mini-Max and let the kids guide!
Like others have said, start saving now. You'll be wanting to add to your flotilla of rafts in the future. LOL