Online store - electronic goods - automotive

I am in the business of checking cars on contract, check the history in the insurance company database and in the service databases. Needs to create a store, the assortment is quite limited is the same product from the description but differ in price depending on the make of the vehicle and it is known that the photo - it will be about 20 30 articles for goods A and the same for B, I want there to be a subsite with data about the company, fairly realistic customer reviews, in addition, a subsite with engraved frauds and manipulations in the checked cars. In addition, it needs a good positioning in google. It would be great if for everything there would be a bill / invoice. I sell on allegro so you could pull reviews from there, I have a page on fb and uploaded some detected scams. He wants a fully functional store with payments and positioning on google. He wants to finally get away from allegro commissions.