Couple Questions.
1. How fixed are you on the race of Ork ?
I'm asking because if you want BIG TANK type then Troll is always an option.
Otherwise Human offers some better all around choices on the priority table as well.
2. I would put back Code of Honor. Bad Luck is well, BAD.
Doesn't have to be Bushido. Make it won't kill other Orks, or Metas, or Innocents, etc etc.
Samurai doesn't have to be traditional Bushido, but it is about Honor & a Code, so its a good choice.