eCommerce website like suitly.com or indochino

I am looking to copy the look and functionality of this site: [login to view URL] I need to be able to edit the photos and content of the site after it is made. It is very important that my new site has the same shopping cart checkout functionality and the ability for customers to create and log into personal accounts with the site just like with [login to view URL] This includes product customization and customer measurements on check out when a customer buys certain products (custom crystal and rhinestone bikinis). I also need a promo code and voucher code option on checkout. I do not mind what platform is used for this site as long as I can edit everything myself including the content on an ongoing basis. Please ask if you have any questions about my project. Please go to [login to view URL] and go through the process of ordering a suit to understand the product customization and customer information required at the shopping-cart checkout. We love the layout, how quick the website loads, image placement, functions and how fast the JavaScript is on that website. There would be a huge difference though as we dont sell men's suits we sell custom bikinis. The user would land on the home page and select for which one of the three different categories we have for these 2 piece bikinis. They then would be given a choice of 3 different cut tops to pick from, then 4 different bottom cuts to pick from. Then a choice of (eventually) 100 different color swatches (16 only in the beginning) to pick from. Once selected they would choose from about 30 different rhinestone/crystal patterns to choose from to have placed on the top and then about 20 different designs to have placed on the bottom of the bikini. Then they can choose to add on some extras that tie the bikini together. We would need to have some of the different customizations be an extra cost to the customer. There would also need to be a running total somewhere on the screen so the client can keep track of how much she is spending and can correct accordingly. They would then need to be directed to the checkout page where other non customized upsell products would be offered to them for purchase before they end up at the cart. Would need site design, logos, possibly images as well. If we could redesign [login to view URL], or [login to view URL] apply it to bikinis ,change the photos and move some things around, increase sizes of some boxes, etc, that would be perfect and we can get started. At this time we do not have all the images as we are still building the business. We need to be able to upload more images over time as well. I guess in the mean time you can just use placeholder images while we are working on that end. thanks for your time