What happens when the LED technology shifts or advances enough to make obsolete your chosen LED components? It's inevitable. You better have your own set of spares. And hopefully you are trying to devise something for sake of VC papers, not actual color printing. Being somewhat off in the green is going to especially limit hue accuracy, since that the primary our own eyes are most sensitive to. But I'm skeptical in general about the accuracy of LED's in color printing at this stage of the game, while tried and true halogen colorhead options are so readily available. But good luck to you. Not every pioneer made it through the wilderness; but some did.