I am searching a solution where users can see several products in categories, see the price, image and description and then choose which items he would like to rent.

So a user should be able to rent camera x and a lense y and he see at the end the price and can choose the rental date from and to.

after that he recieve a confirmation email and the rental company too.

Can somebody help me to find a solution? 

The other thing is, it should be easy to manage the rental items..add new items, delete or change items.

Thank you in advanced