Maybe go to Seagull and head north or start at Saganaga and go into Northern Lights Lake for some basecamping.
There should be enough islands and bays to keep you busy and hug the shorelines to stay out of the wind..
It is big water, so plan layover days and move early before the winds come up for the day.
Check out the "Man Lakes" chain in Quetico also.
Just a starting point for you, of course.