Hello and thanks for the query
It is good that your weight is quite good according to your height. It usually indicates that the Hypertension
may be hereditary. At triglycerides 280 (double the normal value) we cannot advice you to stop medication. Diet and lifestyle changes can helps only maintaining the normal levels but it is very difficult to reduce it at present stage. In my opinion you must try statins to reduce the lipid components. Once they are back to normal than you can try to reduce or stop the medications.
In we think in long term dylipidemia, hypertension and family history are strong factors that give rise to Coronary artery
disease. It is better prevent a heart attack
. Choice is yours.