That's way to many raisins and your chins can get diarrhea from them. Now there's a mess you don't want.
Go with unsweetened cereal, burnt toast, crackers, or even craisons are better than raisins. Papaya is better again.
They don't need sweets/treats, it's like giving candy to a baby.
And that Vitakraft feed is not a good choice, you would probably be better off with a good quality rabbit pellet + timothy & alfalfa hays.You can use the alfalfa as a treat.