Insanity and food

I probably should have posted this only in the food section, but I figured the Insanity angle would make it work here, too.

So I was reading over the Insanity nutrition guide, and I'm not trying to make excuses, but I'm on a limited budget (got the program from a friend who hated it. Yay, me!). I'm trying to figure out how to make this work for me.

Ideally, I'd LOVE to have a different meal from each section of the plan every day, but that's simply not going to happen. I notice there are some staples I can buy in bulk, but buying for one is still NOT easy. I'm hesitant to stick to one or two meals from each section, ignoring the nutrition provided by all the options, but I'm not sure I have any other choice.

Anyone have any success going OFF of this plan but staying in the caloric intake range for each meal? For example, if I buy a bag of spinach, could I find creative things to do with it that still provide the basics that the Insanity meal plan suggests?

I'm open to whatever advice you guys have. This program is right up my ridiculous alley, and I really want it to work but I don't want to go into debt over it.