Great!
I am somewhat limited as my best buddy will join me:
So I will be in a canoe. Estimated speed is 4 km/h.
From what I understand, Porteau Cove has the only reliable overnight parking. Base on that I suggest to go south from Porteau Cove, cross about 15 minutes before high tide to Anvil Island, have about 30 minute break at the beach (to get my buddy tired again), and the continue to the camp site.
As the canoe is susceptible to wind and waves, we would need calm.
I would assume that there is a reliable forecast available by Wednesday and make a go / no-go decision then.
All the best,
Thomas