Magento 2 - Store and MultiStore

We need a online store, using Magento 2. Website store to be used mainly for export, and as a hub for feeding other marketplaces, such as Amazon, Ebay, MercadoLibre, social media, etc. If possible, include all of the below, and more: Alibaba, Aliexpress [login to view URL], Amazon CN Amazon EU Amazon JP Amazon UK Amazon US Cdiscount Connect Americas, Ebay, ePrice Facebook, GlobalSources, Google Merchant Instagram, iOffer, JD Jumia Lazada Linio Linkedin, MercadoLibre, Newegg Priceminister Rakuten JP Rakuten US Shopee Shopify Tophatter Twitter, Walmart Wish Yahoo Youtube, Zalora etc. No need to do this all at once, obviously (this list came from Payoneer, we don’t even know most of these sites. Will chose which ones to work with on-the-go). We will do it in parts, as an ongoing project. Idea is to have a sole partner for the long term, who has the flexibility to offer a full solution Would like to start with Amazon, Ebay and MercadoLibre, especially Alibaba as an option, as we do have a partner in China for its setup Social media if possible. We prefer to work with existing modules and add-ons in order to reduce costs (budget is very limited) Product name and description in at least 3 languages: English, Portuguese, Spanish Payment through PayPal, Payoneer, credit cards and direct deposit Integration with Pipedrive and BI software Integration with Fedex online tools, for calculating freights to different parts of the world. Integration with chat, and maybe videochat (if this will make it too heavy, we can keep the videochat on front page only) Integration with supplier’s ERP as an option for the future Store should allow for several different departments and product families, on a “tree-like” structure: main page leads to product categories, and brands as well, crossed-referenced Each department should allow minimum customization, such as logos and colors