Hello again everyone. I couldn't come back earlier because my weeks become busier as my vacation/roadtrip time approaches. :)
So, I keep narrowing down the locations to allow more enjoyment in each and not just say "Okay, I've been here, now what?". However, a crucial question remains (since all your recommendations apparently are good):
If anyone here would have to choose 3 states from these 6 due to time constrains (Oregon, Washington, Idaho, Montana, Wyoming, South Dakota), which ones they would be?
Also, I'm finding some rooms in those sites you mentioned, but yeah, they are not coming as cheap as I expected. At least it seems that I will have more money for this trip than what I originally expected.
Thanks again everyone. You are really helping us get our first roadtrip done. :)