I wouldn't be giving them that. They won't be able to digest the seeds without grit.
Your best bet is to hardboil some eggs, let them cool, peel them, discard the shells, and mash up the egg really fine and feed that to the chicks. Remove any egg that is left over after about a half hour (if there is any left over) because it will spoil. You can also feed oatmeal, but I don't remember the directions. Do a search here for specifics.
Is there no feedstore at all in your area that you could pick up chick feed locally? Nutrition is very important in the first week of a chick's life.