I would suggest to you that perhaps a good place to go from where you are is to start getting input into your solution from your new team mates. This allows you space to guage their quality, and make them feel like their input is important, as time moves on, you will then be able to understand where the good people lie, and hopefully allow you to give them more control.

This is the kind of thing that will probably lead to your team being able to grow and feel empowered, and hopefully mean that you can take more time to carry out more managerial responsibility, and give you trust in your team. A secondary advantage is that you let go of being the some holder of all knowledge, which could burn you out in the long term.

Also, perhaps allow code reviews in both directions, as it means that you can see how your input had made them look at other people's code and choices, hopefully giving your business the ability to self manage and to ensure that practises are followed consistently, even if your eye is not on the ball at all times.

This kind of thing had helped me make the transition, although I have to admit that taking my eye of the ball sometimes for too long has led to bad code in our projects and codebase. But that's where you go back and share that with your team, and those that may need greater support. Just remember you are one person, so don't expect to carry out all the work by yourself, empower those around you and give them greater fulfillment over time.