That is a tough one. If Copper has Union Creek open, it would be fine. Traffic does suck that weekend but it's far from being the worst travel wise. The thing is you probably won't know that.
Burton's advice is probably right on. If Loveland has the valley open it would be a good spot to go too.
The biggest problem is if the snowfall has started in earnest for the season. I hate to say it, but often times when we get these early snows, the faucet shuts off for weeks. Sometimes it doesn't really get going until the first week of December or (shudder) later. Hopefully November brings plenty snow, but Thanksgiving is still pretty early and you often have early season conditions. Little more than the white ribbon of death, which is not great for kids.