Oh yeah, Jack'll be happy wherever they decide to go. Even if, to be honest, even if they start off just sightseeing, they're bound to start stepping in and starting to save people again sooner or later.
He looks round at Ianto's comment, chuckling. "Do you know, I'd almost forgotten about the soul. In that case, you're definitely coming with us, Spike - at least until we've got the soul sorted out!"