Seems like 14 to 16lbs of weight would be excessive for that location.
1st dive on Roatan (the other side of the island) I jumped in with something like 6 and had to get 6 more from the DM to get down. I later settled on 10 total (could've gone with 8 but I like to be a couple of lbs heavy) -- and I can do pool dives in the same rig and same 2/1 shorty with no added weight at all. I was really surprised at how much weight I ended up carrying there.
My wife may have had as much as 20 on her 1st splash in Roatan, she carries around 14 normally. So no, I wouldn't call that excessive at all.