Shopify website, eBay and Google Shopping integration.

One week maximum to get this job done. I need a new website for Shopify that is synced with eBay and Google Shopping. I am also considering the installation of "Codisto" and other apps that can help improve our workflow and simplify the listing process for my team. I chose Codisto based on the great reviews, but I am open to your feedback. I have already obtained the hosting and premium theme, so I am ready to start this project. The website must be SEO optimized, and you will be responsible for fully optimizing the images. I sell auto parts. There are approximately 650 items in my eBay account that need to be transferred to the new website. As part of the project, you must include one hour of video chat to train my team on how to post on Google Shopping or use the chosen application for that task. Since the website is multilingual, I am unsure if it would be better to purchase an application specifically designed for this purpose. Please let me know your thoughts. I want to avoid the previous issues we had with Google Shopping, so please ensure that the codes are not broken and that the tags, metas, and titles are handled correctly. I do not want Google to reject my website for having duplicate titles. I am available to start working every day at 5:30 am Arizona time, which is around 5:30 PM in your timezone. Being responsible and punctual when we have an appointment will be very important. Thanks.