Thanks for all your precious advice. Also thanks, GraemeInCanada, for your offer to meet up. Unfortunately, it was too late when I saw your message. I did the crossing with a friend and experienced sailor on Friday, July 16, a few days after the storm in Vancouver. And it was great, except for 60 min. of motoring in the middle of the Strait when the wind died on us but fortunately picked up again. Most of the time we had between 8 and 15kt. Probably boring for most of you, but on my first crossing, maybe that's better than 25 kt.
And I have to say, the Tanzer 22 is great and could probably easily handle 20 kt or more.
Again, thanks to all.