Columbus to Los Angeles in June

[jennyCA]

Hi, I'm new to road trips and learned a lot by browsing through the forums. I would appreciate some thoughts on this barebones plan for a road trip in June from Columbus, OH to Los Angeles. It's a one way trip and I'll be travelling with 3 people. 2 of us will be switching off on driving duties every couple hours.

Suggestions for things to see along the way would be appreciated. We are not outdoorsy people. Definitely no camping, and minimal hiking. But we do like photography. Personal highlights for this trip will likely be I-70 in Colorado, Million Dollar Highway, I-163 approach to Monument Valley, Antelope Canyon, and Grand Canyon since we'll be taking lots of photos there.

Speaking of which, do these highways have pullout spots for cars to stop for a few minutes and take photos? Or is it okay to pull over on the shoulder temporarily? I'm curious how people take photos along the highways.

Day 1: Columbus, OH to St. Louis, MO, 418 miles
Pretty much driving straight through on I-70 to cover as many miles as possible. Will likely stop at the US Air Force Museum in Dayton for a couple hours. I plan to stay at a motel 10-15 miles west of the city for better room prices.

Day 2: St. Louis, MO to middle of Kansas, 422 miles
Again, driving straight through with the occasional break. I want to cover more than St. Louis to Kansas City, so I plan to end up somewhere in the middle of Kansas for the night. I'll probably get motel reservations at Salina since it seems like a decent-sized town.

Day 3: Kansas to Denver, 433 miles
I-70 all the way...

Day 4: Denver to Durango, CO, 400 miles
I read over and over on RTA that this section of I-70 is the most scenic highway in the country. So I plan to take I-70 west to Grand Junction, then south on 50 then 560 to get to the Million Dollar Highway. Will spend the night at Durango(??). Or some place in the region.

Day 5: Durango to Page, 300 miles
Will take 160 west to 163, drive through Monument Valley. Then into Page

Day 6: Page to Grand Canyon to Flagstaff, 210 miles
Horseshoe Bend in morning, then plan to get a tour at Antelope Canyon for a couple hours around mid-day. Then drive along the Desert View drive of Grand Canyon towards the South Rim visitor's center. Spending night in Flagstaff.

Day 7: Flagstaff to Vegas, 250 miles
Hoover Dam on the way.

Day 8: Vegas to Los Angeles, 250 miles
I'm very familiar with Vegas and L.A.

This is obviously just a rough plan for now. You guys are much more experienced at this so any suggestions would be very appreciated! Obviously I will be missing Zion, Bryce, and other NPs in that area that people recommend, but I am still in the middle of confirming schedules. I may likely add an extra day or two for the trip, so suggestions on how to best use those extra days would also be great.