MrWill,
You need to do a lot more reading, or you won't get what you expect.
The CD rating of a light is a measurement of the tightest, most focused portion of the beam. It is used to calculate how FAR it will throw light. The published ANSI rating is to a meer 0.25 lux (about moonlight). To calculate, take the square root of the CD (that gives you distance in meters to ONE lux) then double the distance, (that gives you distance in meters to 0.25 lux). That is what the manufacturers publish as their throw distance.
Also, the farther away the target is, the more lux you need on target to actually SEE the difference the light makes, so at long distances, 0.25 lux is a pretty much useless amount of light. IMO 0.25 lux is good for some uses, up to about 50 feet. AND what you are looking at, or want to be able to see can make a huge difference in the amount of light you will need. For example looking at a black cat in front of a grey rock will require more light than shining the light at a white picket fence.
Here are some calculation examples for you:
TK22 19,000 cd Take square root to get 137 meters @ 1 lux, and double it to 272 meters @ 0.25 lux. (68 meters 4 lux)
Klarus XT30 ... given 453 meters throw to 0.25 lux... 226 meters 1 lux... 113 meters 4 lux
TK35 XM-L2 ... given 380 meters throw to 0.25 lux.... 190 meters 1 lux.... 95 meters 4 lux
TK35ue MT-G2 given 242 meters to 0.25 lux... 121 meters 1 lux... 56 meters 4 lux
Malkoff Hound dog given... 700 lumens - 24,000 CD... 154 meters to 1 lux, 308 meters 0.25 lux, and 76 meters 4 lux.
More lumens means shorter run times. The MT-G2 is a LARGE emitter that takes a lot of power, but as you can see it throws twice as many lumens. However they are spread out quite a bit in the TK35, so it is a floody light. Please read
TEEJ's explanation of LUX and CD
Another consideration is that LEDs have a rather narrow spectrum and filters will cut your emitted light to about 30% depending upon the filter.