Well, we don't know your wife so only you will know for sure. However I have had personal experience with this sort of thing, and my advice would be that no good will come of trying to hide it - *especially* if this camera will make a noticeable dent in your financial situation. If it were me I'd talk to the wife first and let her know you plan to sell some of your existing equipment in order to buy this. It would just be disrespectful of your wife and your family to do otherwise.