Most trout are 1-2 lbs, the occasional one a couple pounds better than that. Also have smallmouth bass locally to 5+ lbs..
Fishing the beaches pinks are not big but there is always the chance of coho, and wind sometimes does come into play. Thinking a 7-8 wt might make good sense. I don't really like to wear a fish down on a really light rod, too hard to revive them and I almost never keep a fish.
Usual flies are #6-8 beadhead wooly buggers and #6 saltwater flies, with clousers in the mix at times.