Sounds like you have a few options. The first that comes to mind, is to wait a month to head up to Anchorage, leaving the end of May instead. Now you may have some time line that you need to get back sooner.
Another option is to store your RV outside and fly back to Anchorage. I have good friends that were both born and raised in the Interior of Alaska, but since both have retired, they like to winter in desert SW. But they don't drive the Class A they own back and forth. It stays in storage in the Lower 48. They claim they are too busy during the summer time back in Alaska to use it much anyway and the cost of the driving trip would far exceed the cost of their two round trip plane tickets.
I know of a few fisherman, commercial types, that live outside but either drive or fly back north for the salmon runs. They generally head back up in early spring, in time to get their boats back in shape and back in the water, ready to fish. One of the forum members and his wife own two businesses on the Kenai and winter in Washington, I believe, and they head back north in their 5th wheel which they use for housing in the summers on the Kenai. So hopefully you will get some contacts. From your post I am not sure if you are looking for a travel partner to go with you in your rig, or someone with a rig to go along as a two rig caravan?
As I remember, you have mentioned having a daughter that lives in Anchorage. Any chance she would be willing to fly outside and ride back up with you?