I currently have a jedi knight as my main character and is a force user. I know that the main stats i should increase are strength and endurance. Would you also recommend me getting other datacrons for stats such as aim, cunning, and especially for willpower?

Should i go for 2 purple light sabers or a purple and yellow one?

I never actually do the heroics nor the group because no one wants to do them with me :/

I'm only level 30 in alderaan and i finished all the quests except for the group one. Whats a fast way to get up to level 32?