Update existing magento e-commerce website

General information for the website: We sell chocolate products online
Description of requirements/features: We are a chocolate seller online currently using a magento e-commerce website template: www.urbanchocolatier.co.uk

We need to do some general updating of the website and get it ready to start operating as an e-commerce platform Generally we need to update some pages, upload a product range & descriptions, connect all contact forms and merchant payment platform to be added. In addition we need the website optimization and troubleshooting to be carried out so no errors remain as well as SEO optimization and some widgets and add ons. The website is currently hosted on Godaddy and all of the website files must be backed up and updated files must also be uploaded to hosting and send to us also.
All content will be provided. Must be completed within one week. I have outlined a more detailed list below.
List of changes for website
1. Change all pictures on the homepage gallery banner
2. Change some of the pictures below the gallery on the homepage
3. Sign up for discounts to be connected to mailchimp or similar
4. Add snapchat social media icon at the bottom banner of homepage
5. Add new contact number for Bradford branch
6. Add new contact to ‘Dessert Bars’ page
7. Add content to ‘Partners’ page
8. Contact us page form to link to specified e-mail address
9. New branch info to be added on contact us page too
10. Shop online section – to remove some categories from the menu bar on the left
11. Sign up to be linked to mailchimp or similar
12. Edit the ‘404 page not found’ page to link back to other categories or pages (CMS static block display)
13. Connect merchant services and payment portal to website.
14. Carry out on page SEO & integrate SEO add on
15. Add youtube video on home page under gallery banner
16. Add EU cookie compliance widget

Thanks
Extra notes: