Develop the site Imgur Clone

Hi, image+text, develop the site which can share tube such as youtube, want to develop basic design and system almost same with Imgur site. But, have to make difference that changing of design and structure of menu slightly. In category, it has to be facilitated adding infinitely(e.g. politics, current events, humor, gallery, video etc) Imgur site can sign up just images but the site which i would develop should be signed up not only images also content of a body. In other words, it has to be signed up follow this sequence. title, content of a body, image. The default language is English and it should be developed as a multilingual system. Languages must be added without any limitation and I will translate it. The system have to display the correct language when accessing specific country by IP tracking.(like same with System locale) When adding contents, the system should support 'Select Country' function to show each country contents (Due to the difference of language) 'Management Panel' is necessary for basic management and system which we can register banner ad and application ad exposed at specific location must also be developed. It must be developed in 4 ways. Web and Mobile, Hybrid App 2 sort of Android, IOS, Administrator panel Give me suggestion after enough consideration 1. Total period of development(Web, Mobile, Android, IOS) 2. Cost of development How to provide Milestone(provided over 3 times and this way of provision is unconditionally necessary.) First provided when Web, Mobile, design and coding are completed) Second provided when Web, Mobile, whole programs of Administrator panel are completed(level of commercialization version) Third Android, IOS development completed