Move existing website from OSC 2.2-MS2 to Current OSC Version

PLEASE READ AND UNDERSTAND THE FULL SCOPE OF THE JOB BEFORE MAKING AN OFFER The backend of our website uses OSC2.2. We only use the shopping cart, account, and login pages. All the product pages are on another platform not part of this job. The current server is running PHP5.6. Our site is at: [login to view URL] The OSC part is on the sub-domain: [login to view URL] We need to upgrade to the latest version of OSC and meet these requirements: Copy over existing mySQL database. Reinstall some existing customizations and add-ons. Preform upgrade in a test environment so we have no downtime. New OSC install MUST include a responsive layout that matches our current layout. Current customizations we need to keep in upgrade: Easy print of all “in-process orders”. Paypal Express Checkout. Bundles add-on Master password Coupons/Vouchers Add-on Packages Customization There may be a few more I cannot remember at this time. I expect this will take a bit of time and I want to be thorough and thoughtful with it to make sure it’s done right. Our site currently has many small bugs and I hope a fresh install will give up mobile responsiveness and a fresh start with the back-end. Mike