White equates to death in Chinese culture, but also to the Westerly direction which is also benefited by metals and pale greys. For a south east door as you have, stick to the colours you have suggested: green, light blue and turquoise are perfect. Perhaps you could do the same colour for both doors or a paler shade of the same colour for the back door. Definitely not white though! Also wood elements to include other than colour are tall rectangular like shapes in these areas. But generally lots of plants, flowers and wooden furniture will improve everything in this zone. Especially darker wood tones. Maybe pencil pines would be especially nice if you like them. Wooden wind chimes might be auspicious. Good luck, I think it looks really pretty!

I say go for it as your door is the window to your home. My advice would be to consider the colour of the flecks in your brick to make sure your chosen colour works with it and not to forget about the colour of your roof and window frames. For example I would have loved a red door but it would have looked ghastly with the green roof on my 25 year-old house. Instead I did black with dark grey window frames (which truly just look black) which works to pick up the black in the brick. I added my big pot plants with green foliage and still got a touch of red in the form of an old chair I picked up from an op shop years ago. The entrance is welcoming, attractive and reflects what is waiting inside. Have fun and if your chosen colour isn't quite right do what I did and find a way of incorporating it into the scheme somehow.

Normally , it is me saying red , orange or yellow for the front door , so its actually great to see just about everyone else suggesting that here ! And although I agree if you are keeping that door ( and it is a nice door ) then the bold colours would go great , and it probably doesn't fit your Kung Fu scheme haha , but how about a similar door but in a really nice solid 'strong grained' timber with a rich mid brown stain ?

attaching the garage at the corner can be complicated for the roof so this also has to be considered but can you post a plan of the block showing the proposed location of the new house, distance to each boundary, the front gate and any existing driveway, arrows showing the direction of north and any views and is the block sloping in any direction or relatively flat? the problem with acreage is that there are so many choices and you probably also don't want a view of the driveway from the bath so we need more information about the block