One jacket is tough. IMHO there really isn't a silver bullet... different tools are meant for different situations. Looks like your on the right track for layering.
I hunt elk in September, Whitetails in Nov, and coyotes through Feb. Most of the hunting is on the move. I like having a nice base layer (wool), an optional insulation layer, an outer shell jacket (currently Skre hardscrabble), then something waterproof in the pack. Took me a number of years to feel I got it right, and weather still makes me wonder if I need something different. Overall I prefer light gear as many miles are covered each season.
Sitting in a blind ambushing whitetails and waterfowl in the midwest's weather is much different than finding and stalking deer and elk out West. Out here gear requirements can change if your hunting plans change by a couple weeks or a few thousand feet elevation. The one item I always use is wool base layers. I suggest starting there.
Good luck.
