Build an app to check prices and then post buy/sell orders

Hi, The idea is to build an app that: 1. Gets prices data from WebSockets and collect them on a date-time basis (Create a table) 2. Select prices tables and compare them (Make a query) 3. Based on the above-mentioned comparison determinate list of products to be bought (If then else) 4. Post API call orders to BUY those products ( Trigger API) 5. Capture answer from API calls into a History table to record the Stock of bought products (Write records in a table) 6. Compare the Stock of products table with WebSockets from point (1) to determinate changes in prices, if prices went UP then create API calls to those SELL products at the given obtained from the WebSockets table. 7. Create basic reports with SUM, AVG Estimated time for development:12-16h