"7. there's also a slot for USB and seems like a LAN cable slot, I asked the flight attendent if internet is available but she didn't know"
Seems like no one has answer you on this question yet, but sadly Cathay does not have internet on it's flight yet.
And yes Cathay + any of the One World airlines are good. I don't mind paying the extra buck to fly with them. And collecting the status miles as well! =)
