Planning for Spring Camping - West Branch of the Penobscot/Lobster Lake

I got an email from Jonathan today looking to start planning a spring camping trip. We are thinking about the West Branch of the Penobscot in May. Put in below Roll Dam and paddle about 7-miles to Lobster Lake. Spend at least one night on Lobster Lake. From Lobster Lake, the river flows 15-miles to Chesuncook Lake. Check out Chesuncook Village and then paddle 19-miles down the lake to the take out near the Old Chesuncook Dam.

Links:
River Description from Katahdin Outfiters
Map of the Penobscot River Corridor