My sales pitch was based on replacing a pair of 1980s vintage Genesis speakers that I got right after college with M22s. 'Honey, look how much smaller these speakers are.' I even let her pick out the color to match the decor. When I ordered them, I snuck in a VP100 and acted surprised when it arrived. I explained that it must have been a package deal. Once she heard the huge improvement in sound quality, the QS4s were an easy sell.
I say get the whole thing at once. Chances are your wife will be convinced once she hears them.
