We basically need a website, to process all orders.
User experience on the website would be in following stages:
1) Login (Simple page, just a login)
2) Selection of products (Here user should be able to select products and quantity)
3) Sales order (Here, the user will verify all his selections and cost and submit the order for further processing)
4) Submit( on submitting users order should be sent over email to admin and also a copy to the user.)
No. of Products = 100 only
It's a simple website, no shopping cart or payment needed, not even a home page for that instance.