I want to build a enviro-friendly "green" house. Where can I find plans and costs for LEED and green homes?

I need architechtural plans and realistic way to cost out a "green" home less than or about 2000 or so sf.

Here is what I want:
-passive solar
-Depending on costs:
–gray water recycling
–under floor radient heating
–consider alternative construction like straw bale/rammed earth or modular
–recycled materials for insulation
–bamboo
–natural materials
–solar panels
–heat pump
I’d really like to do it right but I’m of moderate income and single middle aged woman.

I need it to be affordable. I’m in Alabama and few do this. I need to keep humidity and heat and climate in mind.

Under or around 2000 sf

Any info on financing for green homes would be welcome too;

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