I have a bit of route advice. Don't go to Florence from Eugene. That's a so-so trip at best and you'll miss some of the best riding in Lane County by going that way. I suggest you go directly from Eugene to Reedsport via the O&C lands. Once you are twenty miles out of town, your major traffic worries are deer, black bears and birds which are a lot more enjoyable to contend with than drunken ATV folks. Here's the route: http://www.mapmyride.com/routes/view/31073976

Even though it is 90 miles from Eugene to Reedsport, the climbs are all early. (Three climbs between miles 14 and 35.) You can also camp pretty much anywhere along the first half of the Smith River or the Siuslaw River if you want to do it in two days. If you want to stay a little longer, there are other routes through the O&C that are a tad longer or taller if you want more challenging climbs. The only downside is the fact that there are no services between Eugene and about mile 80, so you have to be self-contained.