Virtual Assistant for ecommerce store help

I am starting an online store which will require 20-30 hours/week of work but could be increased in the future due to performance and need. I will require EXCELLENT ENGLISH SKILLS (native or near-native).

The main skills required will be:
• Data entry to add product details to the store
• Write good descriptions for each product
• Research skills to research products, companies, customers, etc.
• Email correspondence with suppliers, customers, etc.
• Basic management of social media accounts
• Marketing (email, social media, blogging, SEO, affiliate) - I can train you on these if you have little or no experience

I will also occasionally require simple tasks completed for my day-time PR job which includes:
• Research for journalists, media, etc.
• Contacting journalists
• Miscellaneous administrative tasks

Other web design/web development skills are a plus but not required. Thanks and looking forward to your applications!