The inside passage trip IS great! I took the BC ferry from Port Hardy to Prince Rupert, then the Alaska ferry from Prince Rupert to Haines one year when I needed to drive home from university but had a very unreliable vehicle. It's such a beautiful trip. (My truck did break down halfway between the Junction and Whitehorse - but the first person to come along after was an aircraft mechanic so it made it back in one piece!) You should totally take the ferry to Juneau. It'd be a great weekend trip - and an easy one with a baby!
Sorry - I did actually have another question - totally random, but with your background I'm gonna assume you're familiar with Tom King - did you ever listen to The Dead Dog Cafe on CBC? For some reason I just thought of it... nobody else I knew ever seemed to find it as entertaining as I did.