buy above 250 when it break its previous swing high
For Stoploss use 5 minute chart and see nearest support. for target also use 5 min chart and fibonacci pivots as i don't keep predefined target. try to book partially and trail.
NOTE: For Gapup or bo before 9:20 If gapup is more than 1% from bo level than avoid completely. if less than 1% or gives bo before 9:20 than wait for first 5 minute candle and entry above 5 minute candle and revised SL below candle Low.