Garland:
If the goal is to sight-see and one has unlimited time, then by all means, take 101 (and the required parts of 1). You will see all that you mention. Hell, divert over to Crater Lake - that shouldn't be missed either.
You will of course effectively double the length (in time) of your trip, if not more than that.
The assumption here - no, make that the stated fact, in what I said anyway - is to get to Bandon quickly.
And for that, one takes the 4 lane minimum, speed limit 70, mostly straight interstates over the two-lane, twisty, 55 limit but you're lucky if you average 35, state and US highways.