BC to Disneyland along Oregon coast

[QuirkySue]

Hello! Trip is being planned for mid-late september. I'd rather hop on a plane but hubby has never flown and would rather drive. We are a little bit flexible on length of holiday but don't want to go much over 10 days, with the majority of that time spent of course at Disneyland/Universal Studios. Two drivers, so we can handle quite a few hours on the road per day - can it be done in two days or less each way? I have to plan it all and book hotels or the trip will never happen ;) so any assistance or tips you can give me would be most appreciated. Completely clueless and first real roadtrip so I need some help here.

I was thinking of driving along the Oregon coast part way on the way down, and Hubby wants to see the Redwood forest. Is there a section where we could hop off the I-5 - see one or two points of interest and get back on the I-5 to speed up the travel time? If you could pick only one or two places to stop for an hour or so (photo op?!) where would it be? What would be the furthest place we could get to just before nightfall on that first day if we make stops along the way? Are there any campgrounds really close where we could pull in and throw up a tent to crash that first night?