I'll have to agree that the 430 will work fine... its only weakness is no PC socket so you'll have to mount it on the radio receiver (not really too much of a problem because it's quite a bit smaller than the 580 so it won't sit too high on the umbrella mount). Just make sure you turn off the auto power off function on your flash (in the custom function menu) or you'll be having to manually wake it up every time it takes more than a minute to adjust your set/subject.





Also, if you're looking for the cheapest possible radio slave set that will work consistently, I've had good experiences with the Cactus V4 set (at about $70 USD for the trigger and two slaves it won't hurt you too much if one gets destroyed and it'll definitely let you know if off-camera lighting is something you want to seriously pursue). If you really don't want to go wireless and want to go the cheapest possible route, the hot shoe to PC adapter will work, but I find it annoying to be tethered directly to the flash (plenty of possibilities for yet again proving Murphy's Law).





P.S. If you don't feel inclined to mess with gels (you should, but just saying) you can always balance light to your liking by setting your camera's white balance to Kelvin and picking the appropriate temperature.





P.P.S. Here's a good place to start for all your strobist needs: Midwest Photo Exchange (link is for the 2 light kit page). They have absolutely fantastic service and a knowledgeable staff. Highly recommended.