R D Fretz,
Get a high powered pellet gun for pest control and humane kills. You have a FAC, get a 1000+ fps either break barrel or PCP.
As for airsoft, it is for a sport.
And yes, your wife and kids can play along side with you. Go to TAC14 and learn before buying, and maybe you can pick up what you need there. Oh, and take you wife to TAC14.
Airsoft GI - Tactical Gear Heads with Michael and Michele - YouTube
Airsoft GI - OPLCMSS Vets Michael and Michele Wojcik - YouTube