I need a professional, fresh clean looking website with ecommerce

General information for the website: Organisation website,
Kind of development: New website from scratch
Description of requirements/features: highly visual, drop down menu, responsive, uncluttered, simple navigationfunctionality
simple menus
responsive

pages: home, about, contact, reviews/testimonials, products gallery, video gallery
video
blog
news
just in/new?
tips?
products
ecommerce - paypal and cc/dc
data capture - sign in/ register - also newsletter sign up for those just browsing
search bar
live twitter feed not really
social media links
colour change for different pages (possibly)
Extra services needed: Customization, Optimization, Security
Similar urls: apple, Harvey Nichols, White company. More friendly then these but still high end
Extra notes: