A 67-year-old man presents with fever, productive cough with green sputum, and pleuritic chest pain. He is otherwise healthy and lives independently. Vital signs: T 38.3°C, BP 132/76 mmHg, HR 96 beats/min, RR 22 breaths/min, SpO₂ 94% on room air. CURB-65 score is 1. What is the most appropriate management strategy?