A 58-year-old man with type 2 diabetes and BMI 31 kg/m² attends your general practice for review of blood pressure. On two separate visits, his averaged seated clinic blood pressure is 152/94 mmHg. He is a non-smoker, with eGFR 75 mL/min/1.73 m² and no albuminuria. According to contemporary Australian hypertension and cardiovascular risk guidelines, what is the most appropriate next step?