(All combos that set Sting as the 2nd trap can also set Horn, depending on meta calls.)

Low to the ground, but play safe under Fuwa. Look for any higher ceiling lines that goes into Verte if possible.

if Ketu is your only play, in theory you should search Mululu to play around Droll. But Mululu 1cc has a much lower ceiling than your other starters, so you can take a risk and search Lukias (or Faimena in better hands) instead.