For Shenzhen Bay Port - Gold Coast would work. Close to Tuen Mun (by bus I would estimate 15 mins to central Tuen Mun, 10 mins on the B3, then crossing + getting to your work). Alternatively, by taxi about 15 mins to Shenzhen Bay Port crossing (cost circa 40 or 50 I would guess, cannot remember exact distance). There are kindergartens here, lots of expats, beach, mountains, its a nice environment for mother and child and not bad for you. Direct buses to central for when you want to go in the other direction.