Hey Dom,
I don't really know what I'll get, I know that american alligators get huge, and that if you're concerned with housing them later in life, a gator is not the best choice. However I feel that I could properly house an american alligator when it reaches 8+ ft so they will probably be my first choice.
However, in all the research I have done I have never read of an alligator over 1000 lbs, let alone 4000 lbs (2 tons). I have read that typical weights for gators is between 250 - 600 lbs. I also read that the current world record for an indo-pacific crocodile is 2,200 lbs. So I find it hard to believe that an alligator which is quite small when compared to a salty could weigh in at over 4000 lbs.
As for a 15+ ft gator, I would love to see one, I have read they are typically 8 - 13.5 ft with reports of larger 15+ ft individuals.
Now since I don't have any hands on experience with crocodilians yet, I can only go by what I have read and been told by experienced individuals.
Here's a small list of some of the references I have used to gain this knowledge:
http://www.flmnh.ufl.edu/cnhc/csp_amis.htm
http://www.thebigzoo.com/Animals/American_Alligator.asp
http://www.geocities.com/Heartland/5960/alligator.html
http://www.crocodilian.com/crocfaq/
http://www.crocodilian.com/crocfaq/faq-2.html
- National Audubon Society Field Guide To Reptiles And Amphibians Of North America
- General Care & Maintenance Of Alligators, Caiman, And Other Crocodilians by Dan Malone and Theresa Moran
- Alligators & Crocodiles - A Portrait Of The Animal World by Leonard Lee Rue III
- Reptiles & Amphibians - An Explore Your World Handbook - Discovery Books
Since you have hands on experience with crocodilians I would love to continue this discusion. Let me know your opinions and such.