In YOUR situation, with what YOU have told us, that sounds like a smart idea. You are better off if she gets a full picture of the whole thing, so that she'll understand what the two of you have as a family to split up, what is available and what is committed (car payments, etc). If she gets a better understanding of this, SO LONG AS NONE OF THE EXPENSES ARE EXCESSIVE, like payments for a ferrari or something (JUST an example, I know you have a car payment that's very low)... you should be golden on this one.

Now, if you had stuff that you were worried she'd find out about and wanted to hide, disclosing everythign BUT that would be very dangerous, because ... well, people usually can't hide stuff without being obvious about the subtrefuge, but also, once the hidden stuff was disclosed, everyone would wonder what ELSE you were keeping back from them... and the chance that you were holding back more stuff would turn this into flat-out war...

But in most situations, people just don't have that much stuff... it's a not very good comment on the way we live and save and plan, in general, that most people don't have significant stuff to worry about, but that's something for everyone to worry about when they retire, I guess. For most people, who do NOT have much STUFF, and nothing which has been hidden from their spouses at all ... it's not a problem to just lay it all out on the line and figure out how they're going to manage creating two households where there used to be one.