The SPL is a great rod & would be a fine tool for the type of conditions you have described. A key factor to understand is the size & type of flies you plan to cast with it. The SPL 3wt would have limitations in terms of casting large streamers or heavily weighted large double nymph rigs. I said limitations because it will cast those but it will not be pretty
Also, strong wind will influence the rod more & can make casting the line challenging.
However, I think the rod would excel in dry fly fishing, small emerges, nymphs and / or dry-dropper systems.
As long as you aren't fishing for steelhead or other hard running trout, the 3wt with a good reel should work very well in small streams.