Slightly off your criteria (missing the MTR station) is Gold Coast Residences in Gold Coast.
Very good on outdoor space and greenery; also next to a beach and mountains with hiking and mountain biking; not new estate but excellent facilities. They also do (or did, you would need to check) serviced apartments so it may be possible to stay for a month and "check it out" as it were.
There is a resident bus (i.e. a scheduled, direct, door-to-door bus) to Olympic on the morning (weekdays only; 5 per morning) and back again in the evening (again, 5 buses). Take about 20-25 minutes.
Totally different ambiance to Tung Chung - some people love it (I live in this area); some hate it; worth checking out though for quality of life.
(Just an FYI - MTR not essential. The bus network in general (not just talking about resident buses here) is second to none).