I've been thinking about a loop for a little while, can't make up my mind on it. 
Tim Lake - Rosebary
Rosebary - Mubwayaka via a long walk on a 3400 meter carry
Mubwayaka-north to one of the three campsites on the 7 small lake stretch to Tim Lake (probably stay on Papukiwis)
Papukiwis - Tim Lake - out.

My trips are generally 4 days, and I think this would work for that.  Going from Mubwayaka to Tim Lake is basically a long walk with a few paddle strokes thrown in (and I double carry).  I did the 3400 meter from Rosebary to David Creek last year (in the other direction), so that's also a long walk, a bit uphill in this direction, but nothing crazy.  I've been curious about that stretch from Mubwayaka to Tim Lake for a while.  Anybody have any insight?  I'm kind of curious if those lakes are lakes or swamps or?  Every portage on the route is low maintenance, that's kind of unique.