The upgrade time will probably be longer than that. When Frontier fails or is divested we will shrink significantly. Many furloughs and downgrades. The top several hundred rah types aren't going anywhere until they are 65. Seek a place with rapid upgrade unless you're choosing a particular regional for what you hope will be your lifetime. That was good advice years ago and was never more true than now. Re-read the post by Mr. Pegasus. He has a good read on things here and good advice as well.