I don't have any suggestions. I'm a total noob here. I do want to express my awe, though, at your grocery bill. 120/month?! How do you do it? Our family of four (two of whom, admittedly, are adolescent boys...) has gotten down to 1100/month - or so, but that's requires couponing, Sam clubbing, garden harvesting , and never going out to eat nor buying organic. Maybe 1100/month for our family is the same as 120 for you, but, I really don't think so, and, we ought to get some advantage due to scale.
Any tips would be very appreciated