We do mackinac island every year. A favorite. There are many nice ports on Lake Huron, which you choose depends on situation. We love port Austin, east tawas and presque isle. Lexington is awesome but pretty far from the island. I usually book a couple ports and then let the weather dictate where we land. Only suggestion is: don’t rush to get there, the shoreline ports are an adventure unto themselves.
A journey starts with small step... get going! Here is a post with some pics about my trip this summer, haven't had a cruiser in a decade, headed north from LSC for a week. https://clubsearay.com/index.php?threads/48-da-owners-club.84284/page-162#post-1356257