More upside possible for USDJPY, channel+oscillators incomplete

USDJPY is tracing a corrective move from 126 down into lower 90s. We are in w4 of C, and w4 seems incomplete. I would like to see more upside in order to 1) Bring MACD back to zero on the 3-day chart, and 2) approach the upper boundary of the channel and possible make a false breakout around 108-109.