Need a shopify App (URGENT)

Hi, I am looking to get a private shopify app developed. The app is like this: [login to view URL] However above app is too advanced. The app that i want should: 1) On install, it should also upload a CSV file called products (which is just a shopify product file) 2) If that specific product is sold (based on tag) then it shows in apps dashboard under 'Pending' section. 3) [Important part] every product and its variant should automatically be assigned a random SKU number however that same 'random' sku number should be connected to a specific SKU number that we would provide you. So basically it should have an app database. So, when that product is sold, it's random SKU match with the SKU as in database and update a price in user's dashboard under pending (Supplier price ) 4) The amount due under 'Pending', once paid, move to 'fulfilment' and once we fulfill item, we need a backend from where we can update customer's order as fulfilled and enter tracking information. 5) Customer should have option to change information like Address and size of variant while it's in pending and once customer pay for it, we could only received updated information. 6) Customer (the one who installed app) should have 'billing' option where he can see all past payments made to us. 7) If we issue refund from backend, customer should see it in the app, under that specific order. 8) Other functions of same app. So there would be an app with dashboard for customer and backend for us. Backend needs to be easy to operate and we should be able to perform action on specific shopify store (who installed our app). Please note these are not all requirements, as i am personally not from technical background, its not possible for me to list all. You need to look at that app and decide. Time Frame: Need this app ready in 7 Days. If you cant do it, let's not waste our time. Thanks