First of all, I don't think that furniture is comfortable enough to sit and watch TV, so the TV should be remove from that room, the purple wall paper and the purple furniture is too much, you should consider another color for that wall and the furniture against the wall it doesn't look good. What is that room at the end is kind of dark and I cannot appreciate exactly what is the purpose of that room. I'm a firm believer in skylights, we have skylights in the laundry room, kitchen, living room and office, they make a big difference. (if you cannot have skylights (or tube lights) can lights are a great option. There are a lot of great ideas from everyone. I can't wait to see the after photos.

A rule of thumb is that the distance between the house and a eucalyptus should be 2/3 the height of the tree. So if the tree is maybe 45 feet, you'd want the house to be a little over 29 feet away. As well as any new root growth that could affect your house, cutting into a root system compromises the stability of the tree. Also, even if the existing roots are deep, driving over the area with heavy construction machinery could compact the soil enough to affect the health of the tree. That's not to say that you shouldn't try, just be aware in case it becomes necessary to cut the tree down later. Good luck and enjoy your new home!

This is the plan I m referring to. plot is South facing and it's 186.6 sq yards in size

Anita Vitrified tiles by themselves do not particularly allow the walls to breathe, and hence are prone to cracking. That being said they do not collect moss either. If you are however set on using these tiles, I suggest you use them in a mosaic fashion, where smaller tiles or broken pieces are used. This will allow the wall to breathe, though the moss collection might be more due to the greater amount of grating.