Forget about Indian/Hudson. You need a dam release to paddle the Indian (10 am to 11 am on weekends), and the Hudson is still a bit big for your situation. Plus it's really too far from here. No water in the Madawaska. If you're lucky, the Petawawa might rise; the lake Travers to lake McManus route would be a good choice, but at this level expect to pull your boat with a rope though a few 'rapids'... DuMoine would also be a good choice: easy when low, amazing campsites... but long shuttle. What about Rouge 21 Milles?
For a ver relaxed 3-day, no whitewater, you can go up and down the Barron Canyon: start and stop in the same spot, no shuttle. But if you want whitewater, go elsewhere.
--C.