Me again
First, thanks to everyone for your generous advice and support.
Were I going with the Atlantis, I was thinking 64 to 65 cm. I know Rivendell would probably put me on something even larger, and we just differ there. That's a big, big frame. Riv. recommends a markedly upright seating position. In a tourer, I'd like bars and saddle to be roughly on the same plane. I've got some drop on my fixie, but that's more of a short-hop bike. My old school racing bikes have a lot of drop, and after 20 miles, I start to get numbness issues in my hands.
Mark