Artistic webs moved to Joomla

We need to move 2 art websites developed in html, php and asp to joomla based websites. The project will be handled in Agile Methodology (the closest we can) and will include: -Creation of the 2 website templates (based on current websites plus some changes and some more content) One of them includes a shop -Migration of the content (texts, audio, video) to the new format -Migration of shop articles -Creation of a Joomla extension to be able to manage both sites content in the same CMS installation -Creation of css files to keep a close format to actual websites We're searching for someone that already have the knowledge on the following features: -HTML 5.0 -Responsive development (the same site will be ready to be seen in a wide range of platforms, from smartphones to smart tvs) -Jquery or similar on searchable fields -css, print ready -Multilanguage -User administration -Joomla Web Store (preferably with bank payment gateway) -SEO capabilities Content will be: For both websites: -Projects, News and press releases (chosing were to post: art and/or foundation) -Some generic and static content (not common) (When I say static it means that it'll be quite unusual to change the content, but still possible) For the first website: aka "arte" It'll be the more complex as there'll be a few entities and you might related any of them to any other, and when you're seeing each of them, you'd be able to see every other entity related to the entity you're watching (grouped by type) The type of entities will be: Artist, Exhibition, Publication, Texts, Video/Audio, News and Projects For the second website, aka "foundation" The content will be mostly static, but the common and a donation page. There'll be 7 tabs/pages, each of them with a few sections of static text. We're searching for a long term relationship, meaning if we are happy with the work and you with the payment, there will be more projects delivered. We will help to show, decide and follow up the project so you have clearly understood the target and the ideas around for a better implementation. we firmly believe in communication, clarity and honesty in our jobs and search for and find partners that work in the same path. The project should begin by 23 november and be finished by New year.