So I haven't tried this and I'll try it tonight when I get home but can you macro smite and holy fire into the same macro. So far everything I read says you can't however I am currently macroing Inner Focus to GHeal and PoH (basically like the following);
/cast Inner Focus
/cast Greater Heal
Now that macro works fine, the odd time I may have to press it twice but usually doesn't mess up on me. So why wouldn't the following work?
/cast HF
/cast Smite
I have them both macro'd to hit target of target but that is the basic layout.