Niche site plus amazon Astore

Hi warrior, this is my first question here on the forum, hope that some one can give a suggestion on how proceed.

I've a niche site that recently, after a lot of works, started to gain good positions in the serp for my keywords ( and start so sell too ..finally )

Is an amazon review site with around 30 unique review.

My question, basically is:

Every one of the product that i reviewed, has other sub-niche, like books, accessories, and more.

I use the rapid review theme ( buyed here on the wf ), that give the possibility to add tab to the post.

If , i create an astore for the "book" and one or for the "Accessories", and place it in a tag on every one of my post what happened?

Basically the user will see the Rewiew, then other 2 tag with "books and "Accessories"

How google see this? Will this damage my rank? ( i think taht google can see this like duplicate content, or no? )

I wanna add them because most of the people that visit my site and buy the product often buy product like accessories and books too and i wanna give them the possibilty to check them directly on my site.

Let me know what you think.

Regards