Since I generally only use them together and they have the same length cooldown, I have Rapid Fire and Wildfire on the same macro. No wait command, so if by some chance I JUST want to use Rapid Fire, I only need to press it once.

And based on an old BRD macro, I have Heartbreak tied to my Split Shot:

/micon "Split Shot"
/ac "Heartbreak" <t>
/ac "Split Shot" <t>

So at the most earliest possibility of use, I'll use Heartbreak over Split Shot, and the regular attack besides.