A 72-year-old man with long-standing hypertension and stage 3 chronic kidney disease (eGFR 40 mL/min/1.73 m², albumin:creatinine ratio 35 mg/mmol) is reviewed in general practice. His blood pressure averages 148/88 mmHg on ambulatory monitoring despite lifestyle measures. According to Australian hypertension and CKD guidelines, what is the most appropriate blood pressure target for this patient?