So I am almost ready to move into some flash photography experiments. I bought Sly Areans Speed Lighters book....and left it at home

But I have the gist of what I want to do and a few willing subjects to put up with me. I have 2 430EX II flashes and a limited budget. I would love to add a 530EX into the mix and to trigger my remotes, just not gonna happen. I would love to go Radio poppers but again cost and sometimes on military bases certain RF freqs are blocked which leaves me with cable sync. I believe what I am looking for is a sync bus? The attachment that goes on my hotshoe to plug the cables into. The only one I've seen so far (limited internet speed) has a 1/8-in plug and a PC plug. Do they make them with 2 1/8-in plug (or 3.5mm is another term for it) What little I did read says that using a cable with 1/8-in is cheaper than on with PC Plugs. But I never see a way to do 2 flashes.
I will admit, I could search a little harder on the net but this limited speed is killing me so I thought I would ask you all to save a little headache. Thanks a bunch!!