Well first of all, most of the TS you have chosen will probably be a good "value" in the sense that they will cover the cost per day of the plan - especially if you change those lunches to dinners, which I would do. This will make you feel you have "maximized" and you won't feel so full mid-day. It will also give you a nice meal to look forward to every evening.
If that holds true, you are still coming out waaaay ahead as your CS and snack will basically be a "freebie". Try to think of it that way.
Secondly, I agree that there comes a point where you cross the line so to speak between enjoying the experience and worrying about eeking out every penny. I think that sort of defeats the purpose of the plan, which for many people is to not think about the food cost, it's already taken care of.
I would hate for you to pay that much money to stress yourself out.
Have fun planning!
Oh, also, don't worry about trying to get every pennies' worth out of CS - most of the prices are pretty comparable if you are getting a "complete" meal. There is however, a thread here somewhere about some of the best CS deals. (I think I remember Cosmic Ray's being one of them.) Just do a search and you'll find it.