If you're going to run a 55w kit, you're gonna need to run a wire to the battery to power it up. The OEM low beams are a 35w kit.
If you're looking for better light output, work on the fog lights first. Those seem to yield the biggest gains. Also, make sure your headlight lenses aren't hazy, since that cuts down on light output as well.
And, not to contradict anyone before me, but higher color temp (in Kelvin (K)) is inversely related to useable light (lumens). A 14000K bulb puts out much less light than the OEM 4300K bulbs.
Personally, I don't recommend going above 6000K for your low beams. Fogs, I would stay between 3000K and 8000K. High beams are fair game (if you want to spend the money on HID replacements.