Write an iPad Application For POS System

I need an application of iPad to make it a an all in one Point of Sale application. The app will need to have the following. - Table map layout - Employee login - Time keeping - Order placing - Merchant Services integration I can show you some examples to better show you our needs. Please give your best price. I know this wont be an easy task but it will need to be on a budget. Must have in house team with past apps produced and launched and have apps with beautiful UI