I am an amateur cook/baker who is in the kitchen at home quite a bit. I keep running into recipes that say "in a food processor..." and so far I've gotten by without one, but it just seems like life would be a little easier with one. I'm looking for advice on the best bang for my buck. I found a Kitchenaid 7-cup for $80 but I'm wondering if 7-cups would be too small? I plan to use it for things like grinding graham crackers with other things for pie crusts, mixing up liquid ingredients for desserts, marinades, etc. Thoughts???