Personally, I would send the girl scouts, one or both, ahead, just to keep an eye on things, in case there's a trap and they can dodge it with their quick reflexes. And on the main path, I'd send Dillon or Celiad forward, with Tsukiko right behind them, and then the squishier units. Ideally, you could also have Dillon/Celiad bring up the rear, in case someone attacks from behind, but that's not a sure thing, and I don't have the strategic mind of an officer, so what do I know.
Personally, I would send the girl scouts, one or both, ahead, just to keep an eye on things, in case there's a trap and they can dodge it with their quick reflexes. And on the main path, I'd send Dillon or Celiad forward, with Tsukiko right behind them, and then the squishier units. Ideally, you could also have Dillon/Celiad bring up the rear, in case someone attacks from behind, but that's not a sure thing, and I don't have the strategic mind of an officer, so what do I know.