Can't speak for you or your wife, I can only speak for me and my wife. So I'm talking about me and not you. I want to make that clear.

There is no way; not maybe, not perhaps, not on the off-chance. There is no way that my otherwise extremely fit non-cycling wife could get herself mentally, much less physically, prepared for the gruelling schedule you have laid out. And that's if she were 20 years old. (She's not.)

I think your first question should be whether this is something she wants to do or something you want her to do. If it's the latter, scrap this idea immediately and beg her forgiveness for having the temerity to suggest it. And buy her a day in a spa as penitence.

Like I said, that's for me, not necessarily for you. But I think you should reconsider.