TL;DR version - A nice four pointer and a good place to do a leisurely activation. Enough of a hike to feel like the one worked for the summit. Good APRS coverage, okay ATT data coverage. QRM on small portions of the CW frequencies (40/30/20M). Get there early or risk not finding a place to park and don't forget your WA Discover Pass.
NC-009, Sheridan Peak, is a good first-time activation destination. It is an easy half-mile hike (about 300' climb) from the parking lot to the summit, which is broad and flat; lots of good spots to set up. The summit is wooded and shady with a fair amount of old growth, so there are no views. Cell data service is spotty. I managed to spot myself once with SOTA GOAT though I tried four or five times. Two way APRS coverage was excellent and I spotted myself on aprs using a VX8DR.