Thing i dont like bout that Lucario is its lack of one of its strengths which is its speed. Yes it runs vacuum/extreme speed but those moves arent that strong and i hate that a Jolly/Timid pokemon can outspread that Lucario so u will not get to use him fully. I wud go Hasty/Naive, 252 atk, 252 spc atk, 4 speed item choice scarf.
Close combat
ice punch/hp (fire)
aura sphere
shadow ball
close combat/aura sphere stab moves. Ice punch gives him Gud coverage over annoying flying/dragon types while hp (fire) wud be Gud for the bullet scissors, speaking foretress, and the metagross/jiraachi that take fighting moves pretty well shadow ball is tech for ghost/psychic types that either resist or nullify fighting.