Mobile development

I need an Android app. I would like it designed and built. An app for an organic oil business. It should enable customers to order a few varieties of oil (like coconut, sunflower, olive oils) in litres and enter the address to which it should get delivered. The ultimate release should contain a logging in functionality which would gather customer information like address and contact details the first time app is used. And some other extra intelligent features like displaying the recent most address delivered, splitting the order across multiple addresses and you can name further. I don't have much idea about online payment, you can educate me with some ideas and I would decide whether to adopt online paying for the oil. For the first release I need a simple app which gets oil required and quantity, a single address to be delivered, customer's email and contact number. A confirmation mail has to be sent to the customer once he confirms I should be notified and I would contact him regarding the payment. I would like to see a detailed sketch of the design for the first release. And a road map for the ultimate release. Pictorial representation would be more preferable. And don't worry about whether I would understand technical words, I would cuz I myself am a programmer.