Classipress Extenstion needed

I need a small addition to the classipress theme. 1. I need the possibility that the user could define one or more coupon-codes on submitting a new AD. This should be a third page at the first step on uploading an AD. It must also be possible that the user could manage this codes, delete some codes or add some new. 2. I an AD has one or more active coupon-codes there must be a button "get code" at the display-screen of this AD When e user press this button a small JS window will be popup and display the first active code from the list of codes of this AD. There should also a button at this js windows "use this code". When the visitor pressed this button, the code will be marked as 'used' and isn't activ any more. If an AD don't have any active codes, the AD will be marked as overdue. General : All functions must be integerated as an external plugin. No codes changes to the default classipress code. Code must work with the latest classipress release. You must have a classipress developer licence. All functions must be multilanguage ready with the default wordpress translation functions (__ and _e) This sounds a lot, but this are only 4-6 hours of coding.