If you're going to be in Utah anyway, book an extra day or two and either ski or do something else depending on conditions. Otherwise, if money's a consideration at all, do something closer to home and then travel to ski later in the season. If money's no concern, wait 'til the last minute and see where gets a lot of early snow and go there
Snowbasin puts a lot of resources into getting their 2,000-vertical-foot WROD open for Thanksgiving. Yes, the bottom 150' of that can be lapped by beginners. But no, it's not worth driving much extra for (much less flying across the country).
Deer Valley lists their opening this fall as December 7, 2019 (https://www.deervalley.com/about-us/faqs). I don't think they've opened early in any recent years, so I wouldn't anticipate they'll open early this year.
I have some negative feelings about Snowbasin and their use of gates at choke points while lacking resort personnel.
With a question of snowmaking and open terrain for a beginner, them having snow guns every 40 feet would be an option.
Having taught mrsjmills and my 2 step kids to ski in the past 3 seasons, Alta is an easy choice for us. Being skiers only matters to me and Crooked Mile is such a good run for those learning.
Alta has some free options with one being a tow rope on the backside of the Alta Lodge. The other is a free lift that was added when the Snow Pine was rebuilt.