Hello again!

So here is our big plan, please tell us what you think from your experience!

From Houston to North Texas, Amarillo.
West on I-40 and big pieces of Route 66.
Grand Canyon, two nights.
Route 66 to Kingman, Bullhead City, North to Hoover Dam, and Las Vegas.
West to Death Valley.
West to Inyo National Forest: Mt. Whitney Portal, June Lake, see some big trees.
Yosemite.
San Francisco.
South on Highway 1, hopefully some whale watching, and finally LA and fly back to Houston.

All of this will take three weeks. Too short in my opinion, but this is the deal, and every holiday is too short in the end.
The total distance will be like 3100 miles, so that's 150 miles per day. But we want to see some things on the way, so in the end some days will be longer than others. We want to stay in National Parks, (Texas) State Parks and we have a Passport America pass. For food we want to use the little kitchen in the RV for the most part.

Regards,
Koos