You probably want a nochanneling on that priest macro or you're going to clip the mind flay like crazy. Also, why isn't mind sear on your setup with your other aoe?

my click macro is threefold, and I think is probably a little higher dps than what you're doing. if you never play with any dps but yourself you don't really need the set raid marker line.

/Click BT4Button49
/Click BT4Button50
/Click BT4Button51

Button one:
/cast [nocombat] avenger's shield
/castsequence reset=30 divine plea, null

Button two (9 second cooldowns): (the commas give the third button macro a chance to fire off)
/castsequence reset=8 holy shield, , , , , judgement of light, , , , , consecration, , , , , ,

button three (6 second cooldowns):

/castsequence reset=5 hammer of the righteous, shield of righteousness,,,,
/script SetRaidTarget('target',8);