Northern Saskatchewan Kayak circuit

Does anyone have any recommendations for a 4-7 day loop in Northern Saskatchewan in a September?

It needs to be a loop rather than a river trip due to car access (one car so need to paddle back to starting point). There’s not much information other than the Churchill river but Pinehouse Lake looks like it could be interesting, with lots of inlets and access to part of the Churchill river. Anyone paddled on it or have any recommendations for other loops that may be possible. I would prefer not too much portaging.