Hi,
Me and my boyfriend are planning to travel to the US for a massive roadtrip in 2011 (most likely early September, or possibly late September)... I'm new to planning road trips, and have never driven in the US before, so any help or opinions would be appreciated. We have a rough idea of things we'd like to see and what route we'd take, but really not sure if this is realistic given the time frame, or whether we're trying to cram too much in too short a time, and it would be better to cover a shorter distance, but see more things, or spend more time at each stop on the way. As we're flying over from Europe flight tickets are quite expensive, so we want to see as much as possible during our time there, but not to the point of being exhausting/unrealistic/unenjoyable.
Ok so here is our plan so far:

Day 1: LA
Day 2: Drive from LA to Morro Bay along Pacific Coast Highway
Day 3: Morrow Bay - San Francisco (either coastal route, or interstate)
Day 4: San Francisco
Day 5: San Francisco - Eureka, CA
Day 6: Eureka - Redwood (Avenue of Giants) Route 101 - Shady Cove (or somewhere near Crater Lake National Park)
Day 7: Crater Lake National Park - Burns, Oregon
Day 8: Burns, Oregon - Yellowstone
Day 9: Yellowstone
Day 10: Yellowstone
Day 11: Long drive from Yellowstone to Moab (near Arches NP) and via Salt Lake City
Day 12: Arches - Kayenta near Monument Valley or should we stay at the other side of Monument Valley that is on the way from Arches?
Day 13: Monument Valley - Grand Canyon
Day 14: Grand Canyon - Las Vegas
Day 15: Las Vegas
Day 16: Las Vegas to Death Valley
Day 17: Death Valley to LA (do we need more than two half days at Death Valley?)
Day 18: Fly home

Ok so here is our plan, any comments, ideas, suggestions would be greatly appreciated in terms of what we're missing out, or doing wrong, or anything at all :)

We may be able to add an extra day or two if necessary, so it would be great to have some suggestions where these extra days would be best spent...

Thanks :)