Good job!!
I think food today is a good idea, just keep everything soft with lots of fluid for healing. The crop won't be able to grind very well for a week or two. If you can contact a vet and get some meloxicam (aka metacam for pain relief, anti-inflammatory) and antibiotic (injectable would be best, like enrofloxacin) that will increase your chances of a successful recovery. Small animal vets would have both those, maybe one would help you for not much $$ once they hear that you are a chicken surgeon!