Nothing whatsoever to disagree with here.
I had a chance to ski a bunch of places out West and they were all great. Some better than others, but weather factors in. The back bowls of Vail are breath-taking, so keep it on your list.
The best and most dependable powder I ever experienced was Alta. Not sure what the snowboarding restrictions are these days - back when I was going they were dickish and didn't allow snowboarders - but put Alta/Snowbird on your list too.
One last irrelevant, lampish, but hopefully mildly amusing note: back in the mid 1990's me and friends did a Vail trip that started with an overnight in Denver just like you. To this day we still have a big can of Hormel Chili purchased in Denver the morning we drove out to Vail (6 feet of snow in 3 days), never eaten and brought back home by one of my knucklehead friends. It comes out on occasion when we get together and it even made it to Vail and back a second time. Good times.
Hope you and the fam have a great time!