You can do that, yes. Or, you could spend 10$ to a USB AVR programmer and use it to flash the Atmel chip and get any brightness you want from less than 1 lumens all the way to 800+ lumens. It's not hard and you don't need to ne a computer programmer to do it. I have never written a line on code in my life, but still I was able to flash it using instructions here. There's no going back to factory drivers for me. The lowest mode of those are usually brighter than I want as mid.