I think rather, edit your question to include most of the things that you want to achieve as the issue of a console app with timing schedule was not there before.
Console App? - Do you mean , then yes!
Timing Schedule - definately possible.
Read from sqlserver and write to couchDb - definately possible.
BANano itself is for WebApps, both with and without jServer.
What I have done with CouchDB currently is only limited to the post link I sent above. Send me a PM to chat more about some of the stuff you need so that I have more details to be able to help you.