Though this isn't tested, this is what I've found from just a numbers point of view when it comes to gearing PGL:

Head: Crown of course, but if you're rich and feeling daring then Silver Tricorne with two INT IV Materia on it should be better

Body: Rainmaker's with Crit Attack+ to (possibly) make your Howling Fist Blindside/BfB combo that much stronger OR the Mercenary's Aketon that drops from the Zaharak king, what you're going for with that is the STR. You could also get the Gridanian GC Shirt if you're Gridanian.

Hands: Fingerless Raptorskin Gloves of Slaying with attack+ materia on them.

Belt: Penance is what I use, though that other belt with the orange with Enmity- or HP+ might be a good investment if you're going for endurance.

Legs: Felt Trouser with the STR/VIT Materia.

Feet: Cobalt-Plated Caligae with whatever Materia.

Rings: Strength

Weapon: Cobalt Claws if you don't have Ifrit, Ifrit otherwise.