Buidling a very basic ecommerce app, Don't need something with loads of features

First of all I need someone who is an expert both in Android Studio and Firebase. Please don't give a knock if you have never used firebase before. I already have a design and did some part of the app(Sign in with google, Sign up , Sign in with email and password and authentication-all this done connecting with firebase) . I'll send you my source code as you'll extend the work from there. I need very simple coding and design, Please don't need anything advanced or complicated. Now what I need is I need to store the details of my products(a very short list, 15 products with their names, size, image and price, I'll provide these details) in a product table in freebase database and I'll need to retrieve them to display in a list view. On the list view there will be a button which will let the user to add them to their order/cart. After the user finishes selecting he will be shown his order details with the names of the list of products he selected and the total price. After his order details are displayed, the user will be asked to put his name, email, contact no and address to place the order. I don't need to implement payment and so after the user put his details for the order he will be taken to a new activity which will just have "Good bye" written on it. I'll send you the source codes and I'll also send you an email id which you'll use to log in to firebase and connect the app with this email id in firebase . After the work is done you'll need to hand over the source codes with any other necessary details I'll need to run the app in my Android Studio. For an expert , I know it just takes one day to finish this thing. So if you can finish it and give it to me within 48 hours that will be great. Please give a knock only if you think you are expert enough to do this job, I'll send you all the required documents and we can also discuss about money then. Thanks a lot.