Automation, Automation, Automation Hire part time or temporary first, then full time. Get a phone with push notifications. Setup a second system to constantly

Automation, Automation, Automation Hire part time or temporary first, then full time. Get a phone with push notifications. Setup a second system to constantly check for failure in the primary system. Get the second system to notify you in case of failures. Better yet, if you can, have the second system be a failover clone and have the notification dashboard be a third system. Base all these systems on different vendors systems if you can. Buy 3g/laptop/other mobile ssh solution and use this to fix things when you're more than 30 minutes from your office/home. And lastly, don't worry so much. Money isn't everything, and you honestly sound like you're possibly going to worry so much about this, it will make your life a net negative.