There are many good Catholic Bible studies out there already, so I don’t think you necessarily have to reinvent the wheel.
Definitely take it to prayer. And ask yourself honestly why you are feeling like you need to develop your own thing.
I have a Masters in theology. I had at least 5 classes specifically on Scripture. I have also attended countless conferences, seminars, small group Bible studies, and more over the past 20 years. I don’t say all this to impress anyone, but simply as a way to preface that I can go to a basic Bible study for beginners and still get something out of it. Indeed, I am often humbled by the insight of “beginners” who see what I have missed.
Certainly, if you want to develop something on your own and you can find something that works for you and your group, more power to you. But I’d encourage you to at least consider going with what is being provided. It might surprise you.