I agree with DIV, I having been someone who was over 400 lbs, at 6'4, AAS would have been a waste of time, plus the cutting compounds would have put undo stress on my heart that my obesity was already causing. I would say, in my humble opinion, as I am no expert, eat right, exercise, lots of cardio and water. By losing the weight and increasing your lean muscle mass it will excelerate your metabolism, also, once your weight is in a more healthy range, you may find that your diabetes comes into check a little more. I personally wish you the best of luck with all of this, don't get frustrated, take it a day at a time, it's not where you start it's where you finish, and at 30 you have a long time to go. Don't take a short cut now that could cost you years off your life later.