I'm still looking - you solder the balance wires directly to the cell - Deans solder worked without any probs.
As far as the PC PS - yes, it'll work fine. 255watts - DUO is basically 2 chargers built into one case - that power is shared. If you push the power on both sides, there will be a limit.
I didn't do parallel - I made 5S1P pacs and then externally, wire them in parallel, but I charge/balance them separately. I think you'll have to wire them for two plugs and build a parallel balance harness to hook them up. Not certain about that though....
LBA10 was out really early and Hyperion put a lot of stuff in there that was coming from customers.