Jeff, your wife is sharing her day with you, this is good. She may be sleeping with you in April, also good. I think waiting until after the visit for the conversation is a sound idea.
Come on now Jeff, if the clutter makes her crazy, do a 180. It really is cleansing. If you dont absolutely need or love something, throw or give it away. Do a little at a time. Come on, you could do it. I'll help.