Can you test ride one? You might like the upright position, it's very comfortable. I enjoy both riding upright and riding aggressively, which has led to owning multiple bikes, with the upright bike being the main ride.
You could get a bit more forward on the Baxter with a longer stem, and more aero by flipping the stem; stem swaps are easy. Moustache bars would bring you pretty far forward, and they look great, but you'd have to get a new shifter and brake levers. There are two shifters that work with the Alfine: the J-Tek bar end shifter, which you can find online for around $75; and the Versa VRS-8 brifter, which runs around $220. If that isn't a deal breaker, you could also go with drop bars; riding on the hoods would put you as far forward as riding in the drops on 'stache bars. Both would look great on that bike.
Or you could just get a cyclocross bike and put some fat tires on it; zippy and comfortable.