Highly Customized shopping cart on a stable platform
Looking for someone with great experience with extremely customized shopping cart.
I'm considering magento, opencart or any other open source or even build one from scratch.
Below are the important functionality I'm looking for.
1. Ability to have several product data fields for product information.
2. All catalog management via data load sheet. (Not looking for manual admin driven setup)
3. Need product master/slave, product attributes, options
4. amazon style delivery address selection
5. amazon/google style saved payment method in the checkout process
6. URL rewrite
7. About Dozen or so business rules that will need to be added