Entertaining on a Budget

I am hosting a party soon and I am not planning to go above my regular monthly food budget for this party. The way I do this is by stocking up throughout the year when I find good deals on items that can be stocked in the pantry or freezer. I will also use a combination of coupons and store deals to help me.
Planning a menu and sticking to it is helpful to keep to a budget. Of course there may be minor changes.
My rough menu for this party includes:
Buffalo chicken dip
Butternut squash ravioli in a sage butter sauce with amaretto crumbles
Cheese, sausage and crackers
Ham and spinach cups
Black bean quesadillas
Chips, guacamole and salsa
Hummus and bagel chips
Pizza poppers
Hot pretzel bites

Magnolia vanilla cake
Snowflake sugar cookies

This party is a kid's party, which is why the foods are more finger friendly and appetizer like.
I am also hoping to find some good deals on beer as the Super Bowl gets closer and pairing the deals with rebate forms the beer companies often provide. This keeps hubby and his friends happy at our parties.