Your company may already be incorporating many green products. Use one of the checklists from HBA green programs and conduct a self-evaluation of the materials you currently use. The Denver checklist is a comprehensive list that can give you a good idea of how you are doing. In many markets these products and approaches are common-place. Don't go whole hog the first time out.
Green building is an evolutionary process that takes time to develop.
Get comfortable with each new set of products. Do some research. You might want to create a research house, as in the example below. To answer this question, McStain researched all the potentials and developed a prototype house. As a production builder, their greatest fear was that they would put something in a house fifty times, then find out it failed and that they were responsible.