I've purchased and used numerous EDC lights over the years from well known commercial manufacturers but would like to venture into the custom light arena. Trying to do my homework but I'm an admitted novice with respect to components/parts (emitter, converter, reflector etc.) I've read enough to know that my first custom purchase will be a McGizmo Haiku but beyond that I'm unsure. I would like a build with more beam throw than flood and a neutral or cool white tint preferably powered by 1x123 cell for pocket carry. The light will be used primarily in an urban setting. Most of my prior purchases were high lumens but again I'm not sure. Is this do-able. Thanks.