Not just Early Adopters, but a blend of all types of teachers. This helps other teachers that aren't so sure about "another new program" see that this is a method and practice that will helps students learn more effectively, and isn't just another top-down initiative that has to be strapped onto an already heavy teaching load.
If you can't show teachers that hands-on making/innovation activities will solve their classroom pain points, you've lost before you began. -What lessons could be better?
Students can be the change-agents that you've been looking for. Create a structure that allows for capstones, projects at the end of units, a maker faire, or use clubs to start to showcase (To teachers and other students) what can be learned through rich hands-on innovation, design and making.