Build an Online Store

Need to build my online ecommerce store. We sell the below products: Website Building requirement: 1. Products that we deal with a. Customized T-shirt, Mugs, Mouse Pads, ceramic plates b. Women clothing: Sarees, kurtis, leggings, lehanga, dress materials c. Beauty Products: Avon, oriflamme d. Health products: Herbalife e. Pet Food: Puppy Food, Fish Food, Cat food, Bird food and their accessories 2. Website Requirements a. T-shirt, Mugs, ceramic plates, mouse pads: We need a designer app where customer can design their own product and submit for order processing. b. Require Payment Gateway. Suggest the best one with lower transactional charges or zero c. Require Shipping integration. Good if you can suggest some good cheap shipping suppliers who can pick up the product from door step and deliver to customer location. d. Need mobile app for shopping e. Left over cart reminders for customers f. SEO & Marketing plans as per different pages g. Customer account creation tools and savings of multiple address, etc. h. Discount tools i. Email Address Required for us. You can suggest us here i. Support email id ii. Admin email id j. Facebook, whatsapp integration k. On cloud premise hosting with zero downtime l. Maintenance cost per year m. Inventory management n. Books management as to inflow of sales and purchase from suppliers, etc. reporting should be there o. Products can be easily uploaded by single transaction or bulk transaction p. Different pages for each category of products with sub categories within it. Need your suggestions here. I've my ideas on this. q. Shopping cart for customers on mobile app and website Note: Feel free to suggest for further improvements