DigitalOcean to Contabo Migration

I’m moving my corporate website from a Droplet on DigitalOcean to a new VPS at Contabo and want the transition handled end-to-end. The application is entirely custom code written in Node.js with Express, so experience deploying and tuning this stack on Ubuntu-based servers is essential... (Budget: £20 - £250 GBP, Jobs: DigitalOcean, Linux, MongoDB, Nginx, Node.js, Redis, Ubuntu, VPS)