I think part of your anxiousness may be in idea of going deep. I think you would really enjoy the 5-10 meter depth. As I mentioned, its much easier for new divers since assent can be done quickly. Perhaps that is the main fear for people is that they go deep and worry about assent. Honestly saying, I had a bit of a scare with a friend who dived with me and another buddy. She was going up and down in depth due to very erratic currents. We were in 15-25 meter depth and the currents moved (pushed) her up quickly and then deeper quickly. She came out of the water properly but suffered somewhat from sickness. I don't know if it was decompression sickness, but it was not normal.