Paiement process on an existing Prestashop website, project to begin tommorow

Hi, We are a small webagency and very often have projects on prestashop, we are looking for a partner for a long time, must be VERY experimented in Prestashop and to build CUSTOM developement Project has to start NOW so that we can finish fast this project and start with you another. The first project will be (the one you are bidding on) : On an existing website build with Prestashop last version : -->We want having 4 different type of categories of products and different payement process : one of the category will have normal products ans process (order, paiement with paypal, delivery). The others 3 categories will have different products and process (send email custom, paypal RECURRENT payement, custom update DB) If you are NOT expert in Prestashop AND custom developement, do NOT bid ! If you are not ailable IMMEDIATLY, do not bid ! Best regards