Welcome aboard Birdboy
.Always good to see new names come into this forum.
It sounds like you have the basics for duck hunting.A boat,a shotgun and shells,camo license and most importantly,desire.
Thats a good start.
You really don't need a lot of gear to hunt ducks but most of us collect gear simply because we can.To start with I would recommend you camo your canoe,either with a paint job or at least some camo material to cover it,once your set up.Mike M has good advice on calls,I would only add that you need to practice your call alot,tape record you calling practice and listen to it to critique yourself.Calling can bring in birds but don't feel you have to call all the time,if birds are coming in just let them come, don't call except for maybe feeding chuckle. There are a number of decent calls for under 20 bucks.
A half dozen decoys will work on birds,plastic dekes like Flambeaus will do Okay.If you are carrying them on a hike in to small water then water keels will work fine.
Bird ID is critical for duck hunting,especially for black duck.We have lots of them but you can only take one so be careful.
As for areas I recommend you break out a Delorme atlas and study the maps for low lying swamps,streams,rivers,ponds and lakes.Make note of areas that look promising and check them out.Scouting is 75% of duck hunting.Coastal areas can be decent,especially when inland freezes up.Rachel Carson Refuge allows duck hunting,but you need to purchase a permit from the Refuge office.
My lab is still the best hunting partner there is.