Can we take bus from airport to big Buddha & take cable car down back to a-port? We reach a-port 7am

Bus is available from airport to the Big Buddha, but you need to transfer at Tung Chung Station.
From the airport, you can take the bus line S1 to Tung Chung Station and change to bus line 23 to Npong Ping Town. Then walk to the Big Buddha. For returning, you can take the cable car to Tung Chung Station and change to bus line S1 to back to the airport.