And perhaps have a good back-up plan since I fairly certain all Copper tribs closed last year and forecasts this year are about the same.

I have a good friend that has guided on Gulkana for a number of years and also keep in mind that these streams can also have major water issues one way or another depending on weather ... they're not nearly as stable as many other streams in the state, so it could be just like planning your trip to Forks and get blown out, only in this case, you've invested a pile for zippo.