Here's a situation where march/march is the wrong choice:

Daurdabla (lv 90)

march/march/minuet, or march/march/ballad for plds and blus.

The trials aren't that hard, just very time consuming.

Anyways, what +march value are you using for your numbers? +2 (standard instrument), +3 (instrument and aoidos' manchettes +2 OR 90 ghorn) or +4 (90 ghorn and aiodos' manchettes +2)

And to rog way back at the start of the thread: Yes, your rdm needs to skill divine when they finish raising the level caps--rdm/whm will get repose at lv 96.