A 48-year-old man attends your family practice for a periodic health exam. He is a non-smoker with no diabetes, chronic kidney disease, or cardiovascular disease. Automated office blood pressure (AOBP), taken correctly on three separate visits, averages 150/95 mmHg. His lipid profile and fasting glucose are normal, and his global 10-year cardiovascular risk is calculated at 7%. According to Canadian hypertension guidelines, what is the most appropriate initial management?