Hello guys, I have a few questions. I own 3 600EX-RTs plus an ST-E3-RT, but I'm thinking about getting the Einstein E640 to use as a key light. I'm mainly gonna be shooting on location. Can I combine the Einstein with the speedlites and triggering them using the ST-E3 stacked on a Pocketwizard MiniTT1? Has anyone tried this combination? I understand the Einstein has an optical but I'd rather use radio. I haven't used my speedlites much but do you think I can get by just using 3 600EX-RTs or should I go with the Einstein plus speedlites as fill/background (manual)? Your thoughts are much appreciated.
) the Einstein.
I know using pocketwizards on all my 600exs would be a solution but it would also make people scratch their heads.

