I want to increase sales 8% next year.

This is my 14th year in business. This year I speant a lot of time on advertising and marketing and It has paid off. I am up in sales by 8-9% over last year. I fell like I am running out of fresh ideas to continue the growth of sales. I want to put together a plan for the entire year (07).
Specific questions? How much better of a return for my coupons can I get with four color? Any suggestions for lunch marketing? I have heard everyone talking about magnet coupons. How effective are they?