Have done this twice now, a very cool high ridge with some nice exposure. It's possible to keep it class 3, a bit harder in places if you stay on the ridge crest. Helen-Father D-Crystal-Peak 10 makes a fun traverse. Found some really interesting minerals up on Father Dyer's east ridge.
Fun ridge traverse, a little routefinding is necessary to keep the difficulty at class 3. Maybe had a class 4 move or two the way we went. This route is sort of like a mini-Ellingwood Ridge on LaPlata, similar route finding required. It would be a good warm up for someone interested in that route.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe