Node.js, C++, PostgreSQL Web App

I am building a web application in Node.js and would like solid support setting up the core stack. The immediate focus is getting user authentication running smoothly, then locking-in a well-structured PostgreSQL schema that anticipates future growth... (Budget: £250 - £750 GBP, Jobs: AngularJS, API Development, Database Design, Express JS, Node.js, NoSQL Couch & Mongo, PostgreSQL, REST API)