Build an Online Store

Need a user friendly version of the existing website located at [login to view URL] This website is the one that I own and have put together a trial run but it is not elegant, intuitive, easy to use. I need to have it accept credit cards, bank information, debit, or square. The website will need to: 1. allow people to upload excel spreadsheets that will be analyzed by the site - I have built the analysis functionality into the site). samples are attached.( 2. accept credit cards 3. be able to provide limited access until the full price for access has been paid 4. track analytics of IP addresses visiting the site (total and unique) 5. integrate google analytics 6. integrate search engine optimization 7. generate emails to those that sign up for the account 8. download PDF output files (sample attached)