OsCommerce Site Development

Looking to Start a e-commerce site. We will be using weight based INTERNATIONAL shipping. We will require the site to work with the UPS worldship API. Each product type will have it's own page and you will be able to select different sizes on that page. For example how a T-shirt company would have several sizes on one t-shirt design. The difference will be there will be a different weight and shipping cost for each size. The site will be able to generate quotes and accept paypal (already have the account). We need to be able to process orders online. I would like there to also be translations and acceptance of multiple currencies. Coder will also need to register a SSL certificate. We are looking for examples that coders have done that are close to this. Coders must show relevant work in their portfolio. We are leaning towards use of ocCommerce but are open to suggestions.