This isn't going to make me popular, but I never was popular anyway. But here it goes:
Right now, there's about 2300 Commercial Divers with years of experience out of work. You are going to spend 20k+ and then have a hard time finding a good job. But that could all change with a good hurricane season.
I went to Diver's Academy, when the cost was only 7200.00. If I had it to do all over again, I would have went to the community college in Louisanna for half that price. And yes, it's still available. I was a freelance diver for the first 5 or 6 years after I went to dive school. No one cared which school I went to. They knew in the first day if I was a hard worker or not, and they (commercial dive companies) were going to train me "the right way" anyway.
IMO, it's alot of money, and you'll have a hard time finding employment
If you are dead set on going, go the cheapest route possible, you'll thank me next year.
pm me if you want to talk more about it.