I used to work at KCAC, they always seemed to have openings for Avionics guys. Tom Conley is the Director of Maintenance there. You could also try Kings Avionics (New Century), Executive Beechcraft (New Century and Downtown), Higginsville Avionics (Not in KC, but about a 45 minute drive). They've all got avionics shops. KCAC also has a flight school.