I am a convert too and my mother named me Joanna. When I converted, I was also looking for a name, but then it occurred to me that this name was meant to be. I was meant to be named after one of the myrr-bearing women. I just knew that it was right. I will not get into the details, but it became very clear to me. If you want to talk about it, you can contact me.
You will also feel what is right for you. It is part of the grace of being called to God. He is talking to you loud and clear (after a few years, that fades away, but we will talk about that in 10 years). He has specific plans for you and a specific name. Listen to your heart, because God is sending you the message, just like He did when He called you(through the message in your heart). You know what your name should be. Don't intellectualize it, just go with what you truely feel in your heart.
In Christ,
Joanna
In Christ,
Joanna