Hmmmm, DL Fagan is not quite a fast farming lead for starvault, but he's definitely okay to use. Max-level on DL Fagan and CDKV is almost basically required. Since starvault is 5 floors, and you have 3 Laphroaigs, that means 2 floors are done through orb movement. I would assume you would want to orb-sweep on the first floor, then button sweep until the final floor. In the first floor, you would either need light or dark orbs to kill. In that case, since the orbs you need to kill on the final floor overlap with what you need to kill on the first floor (either light or dark), CDKV is not quite recommended. Maybe Vampire would be a better replacement over CDKV, since the heart orbs are not used for any offense and you can actually conserve them compared to *needing* to use either light or dark for the first floor. I think 7 dark orbs (1 TPA, 1 3match) and one more combo would be enough to sweep the final floor with just the 2 DL Fagans.