I sail out of Fairhaven on Buzzards Bay. Alwheerler's right, it's a lot of fun!
I used to have an Aquarius 23, a trailer-sailor with a skiff-keel centerboard - from the picture the Kells appears similar. If you're new to sailing the bay can be challenging on that type of boat. Taking the seamanship course is a good idea (something I still need to do). A good mainsail reefing setup and roller furler for the jib would be worthwhile investments if you don't have them already.
Especially in the late afternoon southwesterlies, which can create very steep chop, be cautious and stay close to sheltered areas rather than get caught in the middle of the bay. Do that and you'll have a great time!