I'm not sure I'd characterize the I-205 bike path as "more or less direct without tricky congestion". The few times I've done it, I've found that until you get well south of Glisan that crossing the intersections is pretty scary, and the route crosses to the other side of I-205, and it isn't at all well marked.
Try SE 122nd. Not bad on a Sunday, couldn't say how it works out during the week. I don't recall if it has bike lanes or wide outer lanes.