Hello! So I have decided to go with one AlienBee B800 and then add Yongnuo 560 III. Now for the Yongnuos I need to decided if I buy the YN560-TX transmitter or if I buy a 560 IV which has the transmitter already built in in order to have an on camera flash as well (not sure if that is even a good idea). Now either way, to trigger the AlienBee I will need a receiver so I was thinking on the RF-603 but that is where I got confused. There is 603 II C1, C3, etc. BTW, I am buying everything for Canon based on videos I saw of people recommending that for our Sony.. In any case, I will need a cable form the receiver to the AlienBee so that is where I am a bit more confused. Thanks for any help!