It's helpful to have several types of farming crews, I'll order them:
1) THF/NIN, DNC/NIN, BLU/NIN, WHM/RDM, BLM/BRD - Don't care about red, and it covers all the Grellow triggers.
2) NIN/WAR, WAR/NIN, THF/NIN, WHM/RDM, BLM/BRD, BLU/NIN - Every Red and Grellow is covered, good for farming old zone sets but requires one more person.
Elemental Seal -> Threnody tends to land more often than not, though it can certainly be resisted. If you don't have this many people, you can either do you Red and Grellow triggering in two stages or leave potential Grellow triggers out. You can drop the White Mage on some NMs and maintain all the Grellow triggers as long as you fight on Fires to Iceday, for instance.
Anyway, AF3+2 items:
* Body - Jewels of Ardor - Hedjedjet is by far the best option. A Type-1 farming crew can take him down easily (stun Bindga, Breakga, or failing that, Hell Scissors) Violent Flourish lands easily, so save it for Hell scissors on times when the BLM misses Stun.
* Legs - Card of Balance - Tristitia is killable with a Type-1 farming crew. No need for Red. His Tier 2 is hard, and Sobek is easy but has a bad drop rate and requires Red !!. Pick your poison.
* Head - Card of Vision - Lusca is killable with a Type-1 farming crew. No need for Red. Itz is also easy, but requires Red and Tunga.
* Feet - Stone of Voyage - You will want to farm Bukhis sets with a reduced Type-2 farming crew, but Type-1 is more than enough to kill him these days.
* Hands - Coin of Wieldance - Fake Vrtra in Grauberg is the best option for these, but he's a pain to kill. He looks like a huge pain in the ***, honestly. Dragua is easy to kill and farm, but he is a minor dropper on coins. I suspect this will be the last AF3+2 piece I finish between both the WAR and DNC sets.