I also play on pc with an xbox 360 controller and I don't recommend doing the full combo in one macro I do recommend putting shoulder tackle and mercy stroke if you use that in each one of your combo moves makes me not have to use those as a separate button. You can also see my button setup which never gives me the issue of dropping my stacks. If you have any questions just feel free to ask

note: Shoulder Tackle wil only work if you far enough away from your intended target.