[Green Dragon and White Tiger]

Scenario:
My parents' house is SOUTH-facing semi-D, with a shared-wall (with neighbour) at the East and a long garden at the West of the house. There is a road in front, sloping down from West to East, i.e. the road is higher on the West. Our neighbour's house on the West is higher than ours.
As I understand, this would be inauspicious as the White Tiger domain (West) is higher.
Question 1:
Is there a cure for the dominating White Tiger? (e.g. plant / place something in the long garden at the White Tiger domain?)
Question 2:
My room is at the West sector (my DEATH sector) of this house, with a window facing West :( Although I don't stay in the room often (as I am working in another city), I would still like to apply some cure to it. Please advice.
Many thanks.

[FIVE YELLOWS vs Properity in 8-House]

I am a newbie to Feng Shui who have been learning it mostly through Lillian Too's books. I discovered Geomancy-Online recently and am very interested about all the services rendered here. This is the most organized and informative Feng Shui site I have seen. I have also noticed that the administrators (both Cecil and Robert) reply promptly to users' questions. I wish this site "live long and prosper."
Question 1:
As I am a Kua 3 (Female of 1970), according to my 8-House chart, my Prosperity is SOUTH. I have also heard that the FIVE YELLOWS is also located at the SOUTH this year. Therefore, should I or should I not
i. enhance the SOUTH
ii. sit facing SOUTH
Question 2:
Does the 8-house chart applicable at all times? Or will one get a different one after a certain period of time?
Question 3:
Could the 8-house chart be applied to all floors of a say double-story house?
Thank you very much.
Rose