Welcome neighbour!
I'm from Lincoln, New Brunswick but we travel to Bangor to fly to/from WDW and make lots of shopping trips to Maine during the year. OP is right - take it easy in September - it was VERY hot last September so make sure you schedule in lots of pool time.....
We are travelling to POFQ in December

and will be travelling to BGR on 30 Nov to overnight for the very early morning flight out on the 1st Dec.
Of course I have some family in Maine (as most NBers do) - Calais, North Windham, Windham, Boothbay Harbour. We also travel to Brunswick to compete in the Maine Highland Games...
Hope you enjoy the DIS boards - I have learned SO much from them