ed. wrote in post #9662896
You should know how much power you need by now, you need Quadra power

That's not even beginning to help, really 
If you haven't shot with big lights before it's really hard to tell how much power you need, really, because it's so different to speedlights.
Just ask them, they might say yes LOL.
"Hi, I'm off to Perth for the week to shoot a wedding - can I hire these for $140 for the week? Thanks. Oh, and I need a few modifiers as well."

I like the idea of a head and pack, but at the same time I dislike its "single point of failure" problem, and with them, it's not cheap to get a 'spare' pack.
Small and light is nice, though, as is small weight up on the stands.
cheers, juice (Canon shooter, Elinchrom lighter, but pretty much agnostic on brands.)