depending on how you load your pups and what your boats like, you may want to bring/get dock steps. We have to 80+lb dogs... lol, my back ends up hurting by the end of the trip... started brining the dock steps, much better!!!
As far as places to go,
All the major places (Roche, Friday, Fishermans, Rosario, etc) are good.
Aleck Bay has a nice beach area, prob your first stopping point once you get up there. Great anchorage for the night, helps break up the long trip north...
Spencer Spit is great
Succia, Echo Bay and then over at the beach area by "cluster islands"
As someone else mentioned, pretty much anywhere up there, on-leash your good. Some of the more secluded areas are better for off-leash and letting them run a bit..
I would get them used to dock steps or a ramp as soon as possible while they are young and SMALL...