My wife and I are early in the design phase of planning to build an energy efficient custom home in western Oregon. We have the land, water, power & septic are in, and the site is approved to be built on. We have a designer, and know roughly the layout. It will be around 2400 sq ft. on one level. Construction cost : under $280,000 ( not inc. land ). If we had the money, we'd have ALL the bells and whistles , but we don't. We'd like it to meet "ENERGY STAR " efficiency standards . We get Natural Gas. We have lots of wood that blows down every year. We will have either a wood furnace or wood stove. Considering ground source heat pump, PV solar panels, foam or rice hull insulation. No straw bales/ concrete slabs/ radiant floor heat. What's the best way to get the most bang for the buck ? Thanks ,