Don't take Hy 36. It is doable but you won't like it. Rough and narrow. If you thought 126 was bad you won't like 36. The part between Chesire and Swisshome is worse than a Forest Servive road. Low hanging trees will have you on the centerline.it will take a lot longer than 126. The only difference between 36 and Galice to Gold Beach route is that it is flatter.
If you are going north on I-5 send me a PM and I will give you a good route to take north bypassing the West Eugene traffic.