You are require to build an online store with the following features added:
1. shopping cart system opencart
2. PHP ecommerce solutions
3. Responsive website
4. landing page
5. hide out of stock/sold out products
6. Member log in to see price
7. mobile sales extension
8. admin - visitor counter and statistic
9. free paypal account module setting
10. free shipping module
11. SEOMATIC extension
12. export / import excel
13. Mobile version
Please read through it and submit your proposal.