Hi, thanks for the replies. I was happy with answers back in Nov, and they helped me narrow down the plan mentioned here......
We did consider driving the other way around until I read that Bumpass in Lassen Volcanic NP doesn't open until at least after July 4th, and we would have got there about 10 or so days before and would like to see that.
I guess tips especially on the WA part of the trip needed most now.
And we do want to visit Portland, we like a few days in a city as well as time with nature :)
And yes, the boys will love the ATV's!! excited about that :)