So I'm wanting to start getting into some more off camera flash stuff, possibly some studio work. I've already got the 430EXII and the Cactus V4 trigger and 2 receivers are on the way. Would the 540EZ be a good match with this setup? I'm still new to the lighting world and honestly don't know much about it. I've heard some things about problems using the 430EXII for an optical slave. I'm just wondering what else I would need to make this setup work. I searched, but there's just not a lot of info on the Canon 540EZ out there. Thanks in advance for any advice!