Need 4 domains copied to new CMS (php) - templates

I have a customer who have 4 domains which is at the moment are running under a CMS using asp onm IIS. We want those sites copied 100 % to a new cms running PHP/Mysql/Linux. At the moment there is not decided what CMS to use. The customer has the following demands : - We want a simple and easy CMS, with easy and quick editing - Easy implementing of the design we have now or new one if we decide for that - Picture database as customers can log into the website and download printready files (we have an idea like a webshot basket, where the customers put all the files and when they are finished a possibility to get them from the basked). - Should be ready to run the minimumk 4 languages : English, German, French and Danish (we will do the danish translation) with easy copying of the text and pictures from one language to another. - Newsletter module and other modules we might need in the future - statistics so we can see what the customers download and how many of them e.g. - It should be possible when the project is finished to aks the programmer to develop further modules if we need this. - We are looking for Open Source where we are able to use another programmer after the project is finished. - It should be possible for the customers to leave a comment about their experience with the producs we produce. Further more we would like it finished wihtin app. 3/6 month. As we are serious about this project, it is at the moment not possible to reveal one of the domains. If you need info on this pls post a private msg. As we have no idea what this will cost, we suggest a price of max. 1500 dollars, is this possible ? Please advice us if you mean this is just to little to give an indication of what you mean would be the correct price ?