That’s what I do and it works.
The only time it takes more than the macro alone is if I have to aim something or if the trinket moves me (did I mention how much I hate the bee trinket moving me involuntarily?). I hated hitting my cd’s and having a target reticle pop up last season beause one of the on use trinkets required the proc to be aimed. Blizz is trying to make trinkets interesting, but I’d rather set it and forget it when it comes to trinkets.