I'd go for the seer's cowl and jade crook setup, 3 black pearl rings and an electrum choker.
I use bowyer's bracers, +MP is useless but you might as well use mitts anyway. Doesn't matter.
Can't find or win harley tights for the life of me, but I'd use those.
I use toadskin leggings, even if they don't favor the job the HP and MP is the only real benefit to feet that I see.

Getting over 120 INT MND or PIE is pretty worthless, so I stick with my current setup, which is 86 int str pie and dex, and letting trait conversions and innate gear affinities do the rest. Maxing the job's stats doesn't seem to help any.

I stick to pure T2 elemental nukes and elemental DoTs in parties. You can really layer on the DoTs and do a lot of hidden damage.