My sig pic is from mine SE hunt a year ago. Granted it was a Fall hunt so we were only in the streams with the salmon runs. Spring will be way less of that and more of cruising shore lines I would imagine. So maybe less time actually in the water than a fall hunt and more time in a boat which can be brisk/cold, but still similar gear.
I wore Simms chest waders, and boots. Waist waders, which I also own, wouldn’t have been tall enough for some of the deep water crossings we had. A great rain jacket, I took the Kuiu Yukon and it was sufficient. I wore lightweight - mid weight wool base layers. I took my Kuiu 3200 pack. Everything inside was inside a a dry bag. An absolute must. It was a frequent occurrence that half of my pack would be submerged in the water climbing under big downed logs or wading up and down streams and finding a deep whole. A mesh or lightweight balaclava or head/neck gaiter for concealment. You’ll often be within 20-30 yds of bears. If you typically carry stuff in your pants pockets that you readily use it will need to be relocated to a chest rig/bino harness for ease of access and to keep it out of the water. I used a rubber glove outer layer with a thin wool insert.
Happy to answer any other questions about gear if needed. It’s a blast of a hunt.