Short on the daily AUD/CAD

Short on AUD/CAD with the usual 1% risk set at 1.5xATR. However, in this case, we've also set the TP at 1:1 RR for 50% of the position as the level also coincides with the 161.8 level on a Fib we're observing. If price should breach the TP, the second half of the position would be left to run with a trailing stop at 1xATR