Have you tried contacting Prairie Wind Bee Supply in Cheyenne? Seems like a good supply company that has several pickup locations. They also have a pretty good video installing packages in cold weather.They can't be any worse now than they were the last time I had bees shipped by USPS. The vendor turned them over to USPS in GA. USPS moved them to Texas and held them there for a week until the bees were dead and then shipped them on to their destinations.
I can't buy from that vendor anymore because they wanted me to pay shipping again for the replacement bees. After a long chat, they decided to refund all of my payment including the shipping charges and told me not to come back. Of course by that time it was impossible to order bees from anywhere else.