I would not go short yet:
1. The (future) Kumo is still bullish as far as I can see on your chart.
2. Although the Chikou Span is below the price from 26 periods ago, it it still above Kijun Sen. It could turn and break upwards through price again.
3. Look at the trend lines I draw. Price just bounced upwards from the lower trend line (support).
I would wait until price closed below this lower trend line and place a sell-limit to play the retracement.
BT