Your safety is always the number one priority in surgery. Based on the information provided, you will need to have your medical conditions under good control and get surgical clearance from your specialists. You will have better outcomes and lower your risk if you can achieve a BMI under 30. Those above this threshold have higher risk for complications such as poor wound healing, seroma, and infection.
If your blood pressure and diabetes are well controlled, and you reach a BMI of 34 or below through exercise and weight loss, you could have a TT. You may qualify for weight loss surgery if your BMI is over 35 and you have a serious weight-related health problem, such as high BP, severe sleep apnea, or type 2 diabetes. Consult with your PCP for guidance in finding a weight loss and exercise program that you can pursue.