Defo learn another language as it will help selling yourself as well as giving you a better balance. Python and JavaScript are probably the most accessible. If you’ve been developing web apps I’d sticky to that but with a different language. In your shoes I’d learn JavaScript just because you can use it on front and back end. AWS is more important when you start deploying stuff but most companies have ops/devops doing that. Focus on the language side first. Forget AI for now. NodeJS is defo worth learning.