Squalus
The Good Humor Guy
Rock, you can come out and hang out with me anytime
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RPanick:Paula has some really good advice.
One more thought to add to it. You need to learn to be self sufficient as a diver. Don't get dependent on following someone else. That can get you into situations you aren't ready for. Which already sounds like the case. With just your open water dives you should not have been doing dives in the 70-110 foot range. You should have been staying relatively shallow. It concerns me that you were doing such deep dives, most Dive Masters check for experience before going that deep.
Your statement about not having to worry about navigation and concentrate on diving can get you in trouble. What happens if you get separated, then what do you do.
Now, having said that, don't get discouraged. Your LDS probably has some divers that are willing to help you out and make some simple dive plans. You can likely follow along with them, but you should know where you are at all times and how to get back. If you don't then the dive is probably too complex.
Most of the quaries and even some of the lakes have simple navigation requirements. Follow the wall until you reach your turnaround point, then come back. Others have lines you can follow out and back in. Gilboa has all kinds of lines you can follow right from the dock out to things to see. That makes navigation pretty easy.
Your first few dives may be just to swim out to the platform and practice your buoyancy. Nice part is there isn't much loading and you will get more comfortable with your gear. As you get more comfortable you can start expanding what you do on each dive. This reduces the stess you will face and builds confidence and the practice you need to get good at it.
As Paula said, get to know your LDS, you can consider it almost a social club, and we spend a lot more talking than we do diving.