Anemone - Aria <- Celiad <- Aiyano - Castor <- Livia - Tria <- Dillion - Tsukiko.
Another important point is that Tsukiko, in my opinion, has the highest initiative, which means that even in the event of an unexpected attack, she can easily take a favorable position for the group.
And otherwise... it will work for corridors, but we will fall apart from attacks from all sides and area-of-effect spells. But with eight combat-ready units, there's no way to defend against that.