The way I handle my moonkin in my mixed group is 2 action bars. I'm not at home to see my exact macros but they are something like:

Bar 1
/castseq [tar=etc.] reset=10/target moonfire, null
/castseq [tar=etc.] Starfire spam

Bar 2
/castseq [tar=etc.] reset=10/target insect swarm, null
/castseq [tar=etc.] wrath spam

I then map a button to /swapactionbar 1 2 or w/e and I just hit that button whenever I see the big eclipse moon over my moonkins head. That gets use of the eclipse proc which is huge DPS for a druid.

Another option I have used is, since you aren't watching for procs anyway, is to spec eclipse and just use a
/castsequence Starfire, Wrath That way when you hit your eclipse procs you use them thought free. Both spells very similar DPS and you might even try

/castsequence [tar=etc.] Starfire,,Starfire,,Starfire,,Starfire,,Starfire,, Starfire
/castsequence [tar=etc.] ,,Wrath,,Wrath,,Wrath,,Wrath,,Wrath,,Wrath

I believe I saw a thread somewhere saying you can use both in the same macro to eliminate cast sequence lag issues.
And the proc chances are
60% on wrath crit -> starfire buff
100% on starfire crit -> wrath buff
The buff has a ~45 second? internal cooldown and I proc this thing like mad.
Depending on gear of course but starfire spam is better for proc's until your gear passes a certain % crit, not sure what that number is though.