I need someone to take an existing ecommerce system Or Create system from scratch that will have the following features

Able to apply discounts
Make a purchase (multiple at once) w/ ADD TO CART Option
Be able to change the pics myself
Pics enlargement options
Membership 
Newsletter/Advertisement opt in or out
Accept Terms and Conditions before the purchase is able to be completed
Able to create pages
Accept paypal, google checkout and 2checkout 

I will be using this template: http://www.adespoto.info/oxoo/