With Kuja, losing a speed medal pretty much guarantees you'll lose damage medals because of his group-damage spamming nature. I would concentrate on not losing that speed medal, so yes to SSB and yes to Boostga/Faithga SBs. The only way to not miss medals at all is to have excessive damage -and- extra mitigation layers (dual breakdown SB, +RES SB), but that usually costs lots of money. I didn't get much mileage out of Lure Magic/Reflect because Kuja was really fond of lightning and flare star, but others have used it successfully. Plus, I think you'd get more mileage out of Grand Cross-fueled Dark Zones. I did it with only one SSB, but my Drunk Cecil is basically using an SB every turn with 16-20k Sanguine Crosses anyway.