Improve Socialengine php store plugin for foto and video selling

Sorry for my bad english, i hope to be clear. I have an adult social network in [login to view URL] made with socialengine php. I need to edit my store plugin (purchased here [login to view URL]). Using this plugin my members sell their (adult) videos and photos. The store is not specific for sell those type of contents, so there are some things to improve. 1) in the admin panel of the store plugin, can be checked those type of contents: Simple Products Grouped Products Configurable Products Virtual Products Bundled Products Digital contents + I want add "photo" as checkbox. + I want add "videos" as checkbox. 2) Both, purchased videos and purchased photos must be visible in the site without download them (and if the user want to download them, it must be allowed to do it using concerning buttons on the video/album page). ------------------------------------------------------------------------ 3) If the seller user choose "photo": 3a) it can sell up to 30 photos per product, and that 30 must be selected and uploaded all togheter, not one by one, so is automatically generated an album. 3b) in the advanced foto album plugin must be automatically added 2 default categories if stores/marketplace plugin is installed: albums for sale (photos as preview visible and the other photos protected with the link at the purchase page) and purchased albums. 3c) the allowed type of file must be image/photo extension (because must be showed on the site after the purchased) ---------------------------------------------------------------------------------- 4) if the seller user choose "video": 4a) after the video upload must appear a window that ask: "what part of this video do you want to show as preview?" , and the user have to insert the start and end time of the free preview (minimum duration must be 10 seconds). Then, the selected free part must be automatically copied in the concerning section and in the browse video page of advanced video plugin (category: videos for sale). 4b) in advanced video plugin must be automatically added 2 default categories if stores/marketplace plugin is installed: videos for sale (for the previews + link at the purchase) and purchased videos. 4c) when an user play a video preview from the browse video page, at the end of the video and above the video, must appear a link "buy the complete video" that redirect to the purchase page. 4d) In this page [login to view URL] you can see that the product image is a shopping basket, but i want replace it with the free video preview. 4f) if the seller user choose "video", it can sell only one videos per product and the allowed type of file must be only video extensions (because must be showed on the site after the purchased) ------------------------------- 5) when an user request a payment, superadmin must be allowed to mark as "paid" the payment even if he used an external payment (cash, cheque, etc), and i want allow amount with comma or point (4.52€ or 4,52€) 6) must be present a button that allow user to copy the url of his product for share it in social networks, in the social networks must appear the video thumbnail of the free preview + title, price and description of the product.