HID kits are MUCH brighter than regular plug in bulbs
And, asking which bulb you've got, if it's a sedan, you've PROBABLY got the H4's, but, the Pro5, which is still a third gen protege, uses h7 for low beams and 9006(of 9005) i can't remember 100% for the high beams
So, if you are using H4's, you'll need the high/low kit, which will cost a little more than the H7 low beam kit.
As to your color choice, anything between 4000k and 6000k will give you the most usable light. Closer to 4000K you get, the whiter the white. 6000K will give a blue tint