@Keyzbackpacking hmmm, looks like you're going to have to cobble together a connected series of individual trails, ouch.
If I was going, I'd look for a gpx file that someone may have already created, load that into caltopo and voila, there are your map sections for printing or/and downloading on your map app for detailed nav.
or...use the resupply points listed in the centennial guide pdf to piece together the individual trail sections, on caltopo's detailed maps, that might be the easiest way to put the puzzle together.
here's the link to that screen shot, you can't get any more detailed than that, and caltopo let's you print out your own scaled maps...as pdf, so you can send then to UPS stores for printing on 11x17
and here's a screenshot from gaiagps.com which shows what Nat Geo Trails Illustrated maps are available for Idaho
here's zoomed in a bit on gaigps.com
zoomed in some more, pretty darned good relief data and trail info...I'd use it
also found this
hope this helps, good luck! have fun, and post pictures, or it didn't happen, lol
ps - if it would help you can call me and I'll walk you through it, using caltopo to create your own detail route and maps.