First off, head up the South River and anchor in the cove just downstream of Liberty Marina. Dinghy up the river to Mike's Crabhouse.
If you insist on Cantlers (not worth it in my mind, but your choice), you should be able to carry 6'2" through there in a SE wind. If you choose not to, Whitehall Bay is a fine anchorage, even with winds from the SW, in all but the lightest boats. The dinghy run isn't bad at all.
I expect we'll be in Mill Creek (but not at Cantlers) this weekend.