[atmosx]

I would use AWS, EC2 + RDS for now. A t2.micro should get you started. Make sure you automate the installation using Ansible (it's slow but you don't care, most importantly it's easy to pick-up and it's relatively agentless).

At this point, that's it IMHO. I wouldn't even use an ELB or auto-scaling at this point.

If you need help, drop a mail, I have spare time I can help you with the specifics (free of charge ofc).

ps. AWS has a learning curve and is not cheap but saves you a great deal of sysadmin management and most importantly, saves you from probable fire-fighting at this stage, plus there is the free tier will get you nearly a year without charges.