Here's a guide for you.
https://www.mooglemedia.com/pld-bis/
PLD and DRK share the same gear but WAR needs skill speed for rotations during berserk window.

If no pentamelded accessories.
http://ffxiv.ariyala.com/12A31

Pentamelded accessories and alternatives.
PLD 2.44 GCD Genji Legs BiS

http://ffxiv.ariyala.com/12A2D
Can meld 1x Quickarm V materia to achieve 2.43 GCD

PLD 2.41 GCD Lost Allagan Legs Alternative

http://ffxiv.ariyala.com/12A2H
-0.72% Total value (SS not accounted for, Crit slightly more value in SCH/DRG comp) +1.01% DoT/AA Multiplier (Autos + Goring ~25% of PLD damage)

Left side is DH for damage and right is strength. But if you want to you can meld tenacity in any left gear that doesn't have max tenacity.

Guide and gear set was made by Ari Aquitane.