That is what they are made for. Coastal Cruising.
The big difference in coastal cruising and lake sailing is the fact that you can't swim to shore if you fall out... and the boat can sail off without you if you do. Yikes!
So get a harness and set up a jack line, learn how to hove to, and how to reef your sails fast in case something comes up quick... and have fun!!!!! Push your comfort zone a little at a time, and/or sail with someone who has done it before.
There is nothing better than going to new places in a sailboat.
Go for it!!!!