Magento 2 - API Integration of our Dropshipping Supplier

We would like to have a fresh installation of Magento 2, on a dedicated server that you could recommend us for up to 500k - 1 million products (including variants) and looking for the integration of our dropshipping supplier via API. Data needed to be integrated: Categories, Product names, descriptions, images, prices and stock New products should be automatically imported (but with status disabled for manual review) and those matching a keyword list being deleted. Images within description need to be downloaded to our server and renamed to the product name. Unnecessary details need to be removed from the description (links to the supplier, videos and similar). The prices should be saved within an attribute: supplier_price and then an additional charge should be added and imported into the actual price. Orders need to be automatically imported via API to our supplier, after 24 hours. Those that we wish to cancel to import, should be able to mark within the orders list. The stock and tracking numbers need to be imported 24/7. A user friendly interface, with that we can set and change our margin, import new products in bulk, add and remove keywords for forbidden products. Assigning EANs for every imported product, from an EANlist that we will upload. Furthermore a few extensions need to be installed, such as "m2epro". Preferable we would like to cooperate with you, for continously improvements and fixes regarding our project.