A 52-year-old non-Indigenous man attends your GP clinic for a routine check. He is a non-smoker with no known cardiovascular disease or diabetes. On three separate occasions his blood pressure has been around 150/92 mmHg. His total cholesterol is 5.8 mmol/L and HDL cholesterol 1.1 mmol/L. According to current Australian guidance, what is the most appropriate next step in managing his cardiovascular risk?