Consult a LEED-certified architect in your area and see what they could do for you instead of buying this quite large spec house. I'm an architect with experience from both the US and Europe, so if you want more input feel free to pm me!
Your description of the house sounds like a normal house with some very inexpensive "upgrades" to justify the hefty premium. I see nothing about insulation or heating system. I don't know how many people you are in your family, but it sounds like a big house, which in itself is not very green. Three bathrooms takes a whole lot of high energy material to build, so maybe make do with 2 1/2? I also find it somewhat ironic to build a green house with a two car garage, which I assume is heated.
If you truely want a green lifestyle in a new home I would concentrate on going custom, smallish efficient, highly insulated, passive and active solar, and don't forget beautiful! and keep your cars in a carport, with motor heaters in winter if your climate is cold.
Good luck with everything!