Great stuff, Matt, and welcome home! Sounds like a great trip, aside from the braking: new terrain, new friends, bike and rider happy.
FWIW, my Raven--due to see the light of day on Tuesday--has a slightly different wheel-and-brake setup, with Velocity Cliffhanger rims (machined sidewalls) fore & aft and Koolstop dual-compound pads. I decided not to fit CSS rims, because of reports of experience like yours. Could you have the front wheel re-built, replacing the front rim? Never cheap, I know, but peace of mind is good.