New Invitation ecommerce Website

We have purchased a domain name and would like to have a website designed. Here are some sample sites thatwe like the function and layout (www . minted . com) (www . weddingpaperdivas . com) (www . whitepaperspress . com) (www . hellolucky . com) (www . polkadotdesign . com) The website will be for invitations and gifts. Several are shown and when you click on a color option the invitation example should change. Then if they select the invitation it should go through a series of customization steps(choose items in suite, choose colors and extra options such as pocketfold, layered back cards, guest addressing, ets. and then the next will be wording color and font.)and allow them to see a preview and how each adjustment changes the price. In the end they should be able to place the order I will also need to integrate a website that Iam a reseller for (www . invitationonlyca . cceasy . com)