Wordpress site for increase SEO ranking in other e-commerce store

My question don’t have to do with code but with information if an expert can help.

We have a e-commerce store which is very hard to work its SEO. So I though to build a Wordpress site which will operate as a lookbook. Also it will host all categories and some few products which have have back links to the eshop.

Are all the above safe for better ranking or it will hurt the e-commerce store? Any help much appreciated!