To Victoria Peak , Disney Land and Ngong Ping

As for your demand, I would recommend you use most of local MTR. If you don't mind changing your supposed transportation, here is my suggestion for your itinerary:
Day 1: Local Tung Chung line takes you to Tung Chung station. Then walk several minutes to Ngong Ping 360 Cable Car station and take the cable car to the NP360 for the Giant Buddha. After that, at Tung Chung station, take Tung Chung line to Sunny Bay, where transfer to Disneyland Resort line to the Disneyland for a visit. There are fireworkers at the park at night.

Day 2: U can go to the Ocean Park by bus no. 629 at Admiralty or Center station. After that, go back to Central. Walk to Garden Road to take peak tram to the peak. In the afternoon, go down the peak to enjoy the Symphony of Lights at Victoria Bay.

Day 3: In the morning, go to Causeway Bay for shopping and dning. Then go to the Avenue of Star for sightseeing and then find a ferry nearby for the harbour. Aftewards, you can go to the Ladies' Street and then Temple Street Night Market.