Buy to sell on AUDCAD

There’s a 4 hour unmitigated order block which I intend buying to so as to fill up imbalance. Looking at fundamentals today Canadian dollar is going to be bullish which inversely means that Audcad would be bearish. So setting buy limits at the 30minutes POI to buy from. If price does not hit my targets before 14:30 gmt+1 I would delete them so as not to be caught against fundamental bias.