MERN E-commerce VPS Deployment

I have a fully-built MERN stack store—including a React front-end, Node/Express API, MongoDB database and live Stripe integration—sitting in a private Git repo. I now need it running smoothly on my own VPS with a real domain, free of “works-on-my-machine” surprises... (Budget: $14 - $30 NZD, Jobs: Amazon Web Services, Linux, MERN, MongoDB, Node.js, SSL, Ubuntu, VPS)