Your 7 weight will work. A floating line with poly or sinking tippet should work and if you have any sink tip lines they would come in handy also. If not I have a 8 weight with a shooting head setup that you could use. I am not all that good at catching pink salmon with a fly rod. I have done it but I never really went after the pink salmon. So we may well learn together. There are so many pink salmon in the river that they cause what is known as humpy fever. People who ususally don't fish come from all over just to fish for pinks. Can be cause for some real entertainment just watching all the fishermen.