I did this route on Saturday in a clockwise direction:
http://www.gpsies.com/map.do?fileId=ldxhyfyibnganftc
Clackamas River Dr. would be a beautiful commuting route, but riding through the endless strip malls and glass-strewn bike lanes of Sunnyside would make me want to gouge my eyes out if I had to do it daily.
Keep in mind the bridge between Oregon City and West Linn is going to become inaccessible for *two years* starting early next year.
My wife and I are frustrated that we can't afford to buy a house where we want to in Portland, but rather than doing the exodus to suburbia we're renting in a highly walkable and bikeable neighborhood and investing a little bit every month.
Scott