iPhone/iPad photo printing order application

We wish to create an app for iphone (and ipad/etc) that will allow the user to send photos to our printlab for printing and mailing out to them or another address. We'd like to include size options, pricing and secure payment via CC. We'd also like to allow for pickup from our store for local customers. Not too concerned at present at how orders are sent to us - we can work with developer to get a good outcome. Preferably directly sending orders to email or our server would be best. Integration with Instagram would be beneficial but not critical as instagram images appear in camera roll. Similar apps that can be used as base to work from are: [login to view URL] [login to view URL] [login to view URL] We would like the app to be able to be easily customised by us afterwards, for example adding more print sizes, changing prices, etc.