Hey Durwood,
When are you going to be there? I am going to be there next week (Starting Wednesday and ending on Saturday) for a 4 day stint. The great thing about Acadia is that there is a TON to do there in a very convenient package.
I recently posted a bunch of photos from there in the Nature Photography Section. Some places to go:
Bass Harbor Lighthouse (My favorite landscape place in Acadia...bar none)...for sunset. It has always been too foggy when I tried to go for sunrise.
Cadillac Mountain for Sunrise (though there is also some popular sunset locations)...it is the first place in the Continental US to see the sun rise.
Thunder Hole Area (along the park loop) for Sun Rise and early morning photography.
Jordan Pond for Sunset...
Bubble Rock for morning (not sunrise...but perhaps after sunrise)...it is near Jordan Pond.
The Birch Forest (it has a French name that I cannot recall, but it is loaded with Birch...it is a 1/4 mile hike from the garden for early morning, post sunrise).
Schooner Head - My first shot of it was at sunrise...but the more I look at it, I think late afternoon prior to sunset would be best.
Hope this helps.
James
PS If you can book the puffin trip out of Jonseport, I would consider it. I am going on the 23rd (again).