A 32-year-old school teacher has a 6-month history of episodic wheeze, chest tightness and dry cough, mainly with viral infections and when she runs. She has symptoms about twice a month, no night waking, normal spirometry between episodes and no other comorbidities. She currently uses a salbutamol inhaler a few times per month. According to contemporary Australian asthma guidelines, what is the most appropriate preferred reliever and controller regimen to start?