Hello -
Perhaps I can offer a suggestion that can help.
You are thinking about this in terms of yourself rather than God. As in "what should I call myself?". The onderful thing about God is that, He doesn't care! What is important to God is how you live; what you do as a person. I have met many "Christians" who call themselves atheists and yet their lives resonate with the teachings of Christ.
It sounds to me that you are a student of theteachings of Jesus so perhaps rather than trying to push yourself too quickly to accept a label that you are unsure of, keep reading, keep listening, keep asking questions like you are now. When you are ready, God will know and you won't have to "accept" Christ into your heart because He will already be there.
Dietrich