Tim wrote:
Jerry Kacey has what you need - you'd need his speedlight bracket plus his AB/WL adpater
I don't think that will work. The description of the AB/WL adapter sounds like it adapts Kacey's reflector to Paul Buff's lights, not the other way around.
Maybe that's a "good thing", because that strikes me as way too expensive a way to get a 60 W-s speedlight running in an Octa. $136 for the bracket, $21 for the adapter, and you're 70% of the way to the $225 cost of an AB-400, 160W-s with a 150W halogen modeling light, and the ability to fire off a lot more shots than the speedlight can before it overheats.
Personally, if I wanted to "play" for a few weeks while waiting for an Einstein, I'd check the local ads or eBay for a used Bee 400 or Ultra 600, do my playing, and when the Einstein arrives, sell the used monolight for about what you paid for it, or keep it as a spare.