I don't know about the congressional district.
Also, last year the SS application did NOT count as the USAFA preliminary app. Everyone who applied still had to apply again. That said, from what I can remember they were nearly identical. Save the information and you'll have a good start. (I'd also recommend having some sort of document with all your stats, ECS, awards, leadership, etc, if you don't already--the format is never the same twice on applications, but at least you won't be forgetting anything!)