Denver is a BIG city, but compared to Atlanta, St. Louis, Chicago..etc.. and other eastern cities, it is still a cow town.
The traffic is bad but nothing like in the east.
Go west young man, go west!
You won't regret it. As cities go it is very friendly. Great restaurants, nightlife, museums etc.
And even if the drive is long into the mountains, it will be the most scenic traffic jam you every experienced.
I know, my profile says Florida, but I grew up out there and went to school at Colorado State in Ft. Collins.
I would recommend the move. Be flexible!
John