Just a thought. Go old school. Sell everything and get a Yamaha Stagepas 400i.
Light / plenty of power for 50 - 100 people / Stereo mixer with effects and enough inputs for you and your wife / nice case available to move it. Get a bigger gig? Add a small sub. The mixer has a sub out which when used cuts the super lows to the Stagepas cabinets so they get even louder. Small sub like this would do it for that system
http://www.seismicaudiospeakers.com/10-inch-subwoofers/c/1052
Take your wife out to dinner with all the cash you saved.
I'm thinking of the Stagepas 600i for myself.