While I think using walking sticks with carbide tips is a good idea (I typically use a pair when hiking in the rockies), I'd be cautious about using the wrist straps unless you have some experience.  On the rare occasion where you go down and your walking stick doesn't, the wrist strap could make the fall worse ... think sitting on the ground with your arm(s) fully extended above your head and locked in position by the wrist strap's tension.

The route into Brent that you have selected is not the easiest.  Getting to Shade will not be an issue, but crossing into Yum Yum or Yum Yum to Kash might be an issue.  Then, as mentioned, the climb out of Kash is not going to be a snap.  You will have a choice of 3 portages to enter Burt via Marj ... but the one that is a single portage (may not be marked on your maps) ends over a rock face with a steep down angle toward the water.  If it is wet, someone is going to wind up in the lake.

dd