help me arrange our itinerary for 5 days in Hong Kong?

Hi, suggest you stay at Tsim Sha Tsui, better to nearby the MTR Station. Then you can walk to China Ferry Terminal to Macau, Avenue of Stars and see Symphony of Lights over there. It is walk close to Park Lane shopping street. Stay nearby the MTR station, it is convenient to go to Lady's Street in Mongkok, Temple Street in yau Ma Tei and Causeway Bay for some bargins. Usually, the stores in Hong Kong mark price on good, so barginning is not available sometimes. You can arrange one day in Macau, one day to Disneyland (plus Ngong Ping if possible before Disneyland), Ocean Park and Aberdeen for one day, Victoria Peak, Avenue of Star and the light show with shopping for one day. There are Repulse Bay, Stanleu market, Hong Tai Sin Temple, etc for your to choose for an additional day.