RiderFan said: If Inoue Kikuko is to voice Yukari then Hayashibara Megumi must voice Yuuka. Tanaka Rie would make a fine Ran, and Noto Mamiko for Yuyuko.
Sorry but Yuyuko already has Kayano Ai as her seiyuu while Tanaka Rie is the voice of Sakuya.
See the Touhou Musou Kakyou voice cast for more details.