Need to get your weight down before considering body contouring surgery. At your weight you are at a high risk for complications. You may want to consider bariatric surgery.
While I agree with the other doctors here, there is a way for you to get where you want to be. I routinely refer patients like you for a laparoscopic procedure which will help you lose aroun 100 pounds in a year. Then I see them back and we consider body contouring surgery. In many states the weight loss procedure is a covered benefit. Good luck.