I second your idea about the double title, since when I think Jeeves and Wooster Around the World, I think of triedunture's story, Around the World in a Goodish Bit of Time.

Anyway, to add my opinion to the mix (for what it's worth), I love the idea of being able to get the finished product in paperback, UK beta is all hunky dory with me, and I'm amenable to beta after the fact as long as all that's being fixed are grammar and spelling issues.