Whoa....thats a lot of sensors.....try e-bay first before you buy that. It looks like that has a photo sensor on it that looks for a flash and then fires off...could be a problem if you got more than one photographer working.
Look for something that is either radio controled or wire control....
Also, goto
YouTube - Broadcast Yourself.type in stobist...there are some great videos there to help you out...(David Hobby has a great one)
Off camera flash part 1
also check out
Strobist