Amazon listings for 21 products & pan-european FBA inventory

The Lab Room is a spainsh skincare brand based in madrid, Spain. We have a seller amazon account. we sell 15 products in spain, 12 in france and uk, and 6 in italy, and 2 in germany. we would like to complete these listings up to the 21 products we want to sell in Amazon. We would like to review all the listings and make sure they are perfectly completed with bullet points, platinum keywords etc.
We would like to set up the pan-european inventory and give out the logistics of selling to amazon.
We would also like to explore the possibility of setting up an account in amazon .com through our amazon uk account if this is possible. you can check out our web page www.thelabroom.com, to see the products that need to be upload into amazon. please note that only 21 products from the webpage will be sold through amazon.