I would make the macro, though. Just so you don't have to type all that stuff more than once. I think you can shift-click the links into a macro the same as you would the chat text. If it's an advertisement that you're gonna use more than once, make a macro to do it.
As far as the three messages, though. You may not want to list all your enchants at one time. Pick some that go together and advertise them. You could make three separate macros, for three different advertisements, and just rotate between them every so often.