Build an Online Store

My website is an ecommerce site that specializes in offering Monthly Subscription Box. Month to Month, 3 Months, 6 Months and 12 Month subscriptions. Along with being able to sign up for one of the subscriptions, I would like to have a place where customers can shop for products. What separates us from other "sub" sites I need to have it set up so that when the customers come to the site and want to subscribe it walk them through personalizing their "box". Example questions (first they must join the site with basic information) [login to view URL] Mom Stage would you like to join New-2, 2-5, 5-8, 8-13 or 13 +? 2. Do you use an Android or an Apple? 3. Shirt size Small, Medium, Large, XLarge, XXLarge 4. Are you Nursing? And so on. I would like graphics that do not look basic and cheap. This is a site for mom's. Color scheme/Theme (these are the ideas I am torn between) Owls, Ocean, Polka Dots, Whimsical and Hot Air Balloons. As far as color soft, pastel with a touch of bright. I would like a Forum Sections, so moms can share and discuss different topics. A page for admin to post past boxes photos. My biggest thing is having the store/shopping cart all set up and presentable. As well as easy to use. That is all I can think of right now Thank you