E-Commerce Clothing Store

The client wants an online store very similar to [login to view URL] with the same power, usability, functions, sale techniques (ie upselling and cross selling, add ins, like when you look at an item– More From Fila: And Other items you may be interested in... / the cross sell when you purchase, you might like: others who bought this bought this too etc etc) He would like the same size large pictures, and thumbnails on the New In etc bits and bobs, and each item must have 2-3 swappable pictures, he isn’t too keen on the colour scheme etc, he said he wanted something to stand out more, he has the graphics and branding of the shop already and it would probably be a case of fitting it together, mainly using a black and gold theme, with artistic edge background of bricks, but still clean cut as [login to view URL] is. He also wants the same, shop by category AND shop by brand functions, but for the brand names he wants to use full colour different logos as opposed to Stand Out’s greyness. And also the As seen in... section is also important to him. He wants international ordering, so the correct exchange rates etc need to worked in, I know Zen Cart and OScommerce can do this, if you manually keep up-to-date with the exchange rates, is it possible to have the backend check for exchange rate changes once a week or something? - perhaps a better idea to stick to dollars, pounds and euros to keep things relatively simple. Also he would like an MP3 player, so shoppers can listen to music as they shop, they have their own DJ’s license etc. So quite a few things there, roughly how long and how much please? Thanks.