Online store turnkey

For an electronics store need help selecting and customizing a template, site configuration, connection of the necessary modules.
The site is powered by PrestaShop (this is mandatory).
On the website you need good search engine that allows you to change the search parameters depending on the selected product category.
In addition, when you create a product, replacement part or replacement module, it should be possible to specify the model with which it is compatible (to view model characteristics to be able to look for her spare parts and accessories)