Design a simple iOS Messaging App

I am in need of an iPad app, to communicate between iPads in one location on the same WAN. It is for a restaurant where the kitchen is on a different floor than the restaurant. There is an iPad in the kitchen that needs to have a simple list of servers, each one on there own button, that when touched will send a predetermined "order up" message to a specific servers iPad. It would ideally flash the button on the iPad until the server has touched the message on their iPad. The server iPad needs the incoming message to pop up on screen, and make a noise (perhaps every minute?). If they touch the pop up message it would disappear completely, without staying in message center. The kitchen buttons should be adjustable when held. When in this page, the name on the button needs to be adjustable, and the IP address for the iPad that will receive the message, and any other settings that need to be entered to allow this to work. Best case would be for this app to be accessed on the kitchen IPad by swiping in from one of the sides or top, but that is not a big deal if it is not possible. A master settings page could also be used instead of each button if that is easier. I don't know what apps usually cost, so please let me know if it could be done in this budget or if I am way out to lunch. Thanks for looking!!