ZenCart Functional Modification/Quote System

if you do this right, I might have more work for you. what I need is a quote system, basically if a Product is not in cart, they can specify the product they want, and save the shopping cart without a price. then in the admin a price will be set and the user will be able to finish the purchase. when the admins gives a price to this product he will be able to enter this product to the database with a mini form that will also create the attributes (same attribute always) on the fly this products are all in 1 category, and the information to be filled will be the name, and the quantity , the price will be 0 as it will be entered as an attribute.