Asura.Catastrophe said:
All AF2 except feet has its uses. You'll realize for the most part you'll be swapping in and out 60+ slots of gear to be at full potential.
Depending on your race, +MP should be one of the last things to consider for SCH 75+. Moreso than any other mage job unless you're going to immediately swap them out after your first cast.
Really, like the others have said.. it's mainly Teal body, Lemegeton medallion/prudence torque and aquilo's/snow rings for the actual nuking process.
Fixed
AF2 Feet are so useless, Inventory -1
Oh and to put more emphasis on AF/AF2, it's all game changing for SCH, AF Head+1 for helixes/sublimation, af body for resist and enfeebling, af pants for buffing (hi2uphalanx), af feet for precast speed up, af2 head for resist nuke set and stoneskin and precast speed up, af2 body for buffing (hi2uphalanx...again!) and sublimation, af2 pants for dork magic, af hands is mediocre, but I guess a baby's first healing piece that is nice for buffing and possibility of interruption, af2 hands are amazing for enfeebling and af2 feet... they make good decorations for your trashcan :)
Snow Ring and omega ring, Teal Body for nuking, AF body for full resist nuking and for enfeebling, Uggy for neck and elemental torque for neck when Uggy not useable.
Also, don't use prude torque/legemeton unless you need it for helix spells or you get +1 lmedallion to replace elemental torque. On my server Lmedallion is 500K and +1 is too much. Not worth it when you could spend that gil on something else more important. T4s and T5s get a huge bonus from Mattk for SCH. There are plenty of places and items to pack in INT (Cream puff, abyssea buffs, snow ring/omega etc.) you don't need to ruin the neck slot. Put some uggy in there or elemental torque when uggy not active. If you cap without elemental torque (depending on mob) then you can use Caract choker for Mattk+2 instead as it's better then 4/5 INT still for nuking.
That's all relatively cheap until you can get actual drops that can replace those pieces :)
Most everyone in this thread already covered most of what I said, just putting in my garbled useless opinion :)