Cluck is right that you can do all the above with a little swinging, unroped exposed scrambilng, etc. However, to safely reach the trail below without any hassels I still suggest 2 60 Meter ropes if available. Belay #1 and the rap anchors are not inline with each other.
Yeah, trying to incorporate the belay bolt in 2 rappels is tricky. But you don't need 2 60's to reach the trail safely in one rap. Two 50 meter ropes will also reach the trail safely in one rappel from the chains on top.
Don't take the first trail north from the highway you come to that goes up the small ridge to the East Face. Instead, walk along the highway past the "Portland 22 miles" sign and go the the small "Adopt A Highway Program" sign. At that point, find the trail that heads right (north) down into a small brambly and swampy area. This trail will take you to the South Face climb.