Well, no sense in my overloading you more but just a few comments. No, the North Rim is not as beautiful as the South Rim of the Grand Canyon. And no, you do not see as much; you see about 10% as much. If you go there stay at Trailer Village at the South Rim.
We have been traveling - part time - these western states for 17 years. And love them.
I also am assuming you do not mean the actual Four Corners monument - a waste of time and fuel.
4runnerguy, as usual, has it well stated. He, in fact, about described the trip we did - once again - this summer / fall.
There is some much out this way to see but do not spread yourself so thin that you cannot enjoy places - narrow it down to a workable level and then enjoy.
Be safe.