[Swamp-Rocket]

Want to reiterate on the point above. Double Boosting in general imo is a pretty unviable strategy tbh since you have fewer coverage moves and during the first boost. Even though you get perfect coverage, there are some Pokemon you just don't hit hard enough. Also if you boost the wrong stat to deal with one of the many Lucario checks then you are in trouble since you have one less move to hit opponents with. In addition to this Lucario isn't exactly that powerful on the special side to warrant using Agility... although it may look like it is due to the raw stats, Close Combat is much more powerful than Aura Spere.