I'm fortunate enough to possess both Gandiva (90) and an Annihilator (95) with Last Stand merited x5. I full time the Anni (Coronach -> Last Stand until aftermath wears, then reapply) and switch to Gandiva for archery procs. I'd full time Gandiva inside abyssea except for marksmanship procs.
You have drg, blu, mnk, nin, war and blm? Can you come bard? Come bard.