We just decided to head to Maine for 5 days in September to celebrate our anniversary. Fly into Portland on 9/8 and out of Portland on 9/14 (in the afternoon). We like hiking, biking, and kayaking. Based on the time of year, need suggestions on whether we should divide our time between Boothbay, Camden and Acadia or just head to Acadia and spend all 5 days there. Also, feel free to give any specific suggestions of "must sees" or "must do's" in 5 days.