Looking at suggestions I think the 30-46 would work well ... It's still a 16 tooth jump, but not sure what the issue would be re: etap FD??? I'm far from an expert on bike mechanics though I do try to do all my own work. Would I need to move the FD down? Any other issues I don't know about?

low gear would be: 0.83
high gear: 4.18 (close to my current 50, 12 and good enough)