If that's your only character and you want to craft on him, with no critical bonus except from bots it doesn't really matter what you pick... just pick what you like. If you have more then one, you're better off gathering and feeding materials to other characters, or going with the old fallback of Biochem. Artifice is also something to think about as an option as no companion has a critical bonus to Artifice (not including droids). You might not get a bonus, but your no worse then anybody else.
If i do make pretty much every class, Inquisitor, Bounty hunter, Agent, Warrior ect.. you know what crew skills i should take on each char?