You would probably be better off going with a typical tungsten kit, unless there is a special reason that you want to use batteries. Tungsten fixtures are not as efficient as LEDs nor ballasted sources, but tungsten has a much lower "piastre-to-footcandle" ratio, and the color spectrum of tungsten is as pure as you will ever need. In addition, tungsten lights are generally easier to control (focusing, dimming, cutting, etc.) than LEDs and Fluorescents. On the whole, tungstens have more "punch" than LEDs. Just look at the photometric data charts of some of the LEDs and compare them to those of the tungsten fixtures. Be mindful to compare the readings from same distance and with the same beam angle. By the way, some manufacturers mislead regarding their beam angles. The standard way to get a beam angle is to delineate it at the point at which the brightness drops one stop (50%) from the maximum level (usually at the center of the beam). If the manufacturer doesn't specify how the beam is delineated, there's no telling what the "actual" beam angle is, unless you can test the unit yourself. If you aren't too particular about the double shadow from cuts into the side of the beam, you will probably be happier with open-faced focusing lights, instead of Fresnels/refractive-focus units. Open-faced fixtures are usually lighter, more compact, more rugged and less expensive than their lensed counterparts. Open faced sources usually have more output, as well.