Dallas Diver, cool!! You've got no worries then if you choose to do it. You aren't supposed to drop below 130 anyway.
I've done the Hole 3 times and would have done it twice more. Once I missed because one of the engines on the boat broke down on the way out(not Amigos) and we dove Turneffe instead. And the other time I missed, I had to call the dives because I'd had too much fun the night before. I've been pretty lucky also. Each time I went out there, was a beautiful day or at a minimum a nice day.
If it was the only dive that was going to be done on that day, then perhaps it is not worth the trip. *However*, it is not the only dive that day!
If you go with Amigos, you go out on their brand new and reasonably luxurious cruiser. (You can even nap on the provided mattresses on the way out if you are still sleepy.) You dive the Hole with the sharks. Included in the day, are two more *fantastic* dives and a real nice lunch on an idyllic island. On the way back to San Pedro, you will be served panty-rippers, if you are so inclined to indulge. It's one helluva way to spend a day, if ya ask me.
I've enjoyed the Hole more each time I've been and while that's partly because my overall diving experience has increased since the first time, it is also because I'm more more familiar with the site now and I spend time poking around the wall looking in little chambers, checking out the composition of the wall and contemplating the majesty of the events that created such a place. To me, it is almost a spiritual thing. Get Changa talking about diving the Hole if you can.
Any number of people feel the way I do, but just as many or more, don't think it is all that. There doesn't seem to be too many reactions in between the two.
I think you should go. Take your flashlight. I hope you have great weather and, say, by the way, the last time I was in there, I got cruised within 10'-15' by an 8-10 footer. There he was giving me that deep-black-eye-once-over while I was hanging on my stop at 20'. :^0
Can't beat it with a stick, I say. LOL