Well it wouldn’t be my first shark dive. I did two in South Africa and a great white cage dive (I know that doesn’t really count) but I’ve been around plenty sharks in SA and was very comfortable around them.
That sounds good, a significant advantage over many people early in their diving. And you may be one of those 'naturals' who readily takes to diving and the acquisition and application of the skills and mental task loading that go with maintaining buoyancy, being mindful of depth/time/gas pressure, keeping up with the guide and group, looking around at the interesting terrain and life, etc...
In Dan's 3rd/4th quarter
Alert Diver magazine, there's an article called
Don't Bite The Hand That Feeds You (by Gary Rose, M.D., FACS). Hopefully that link will work. In a nutshell, a couple didn't keep up with the group as instructed, the shark feeder professional kept signaling to them, and then nearly lost his hand (and I wonder what function he'll recover).
I'm not saying you need to be a great diver to go on shark feed dives ('cause I'm not), or that I was always where I should be (nope) and knew where the tiger shark was (nope; I recall our guide pointing her out to me).
You may be ready. A lot of people with your dive count wouldn't be, but you're you, not them. Hope you have a great trip.