have you considered moving to sheung shui or fanling as you work in shenzhen, there are plenty of high class apartments ( royal green) or even expensive and posh houses ( eg beas river), even leon lai ( famous chinese/hk star) has moved here from happy valley a few months ago, taxi to lok ma chai will be cheap ( around HK$30 to HK$50),
Royal Green
if sheung shui or fanling is not your cup of tea, then maybe fair view park.
surely you will save up to HK$4,500 on taxi alone by moving to a location which is geographically closer to your work place ( assuming that you work in shenzhen, hence why the 8 am sharp within the last message, are you a teacher or some sort?)