GP is known for being the armour that can get 4 sockets with the lowest strength requirement. That said, there is no reason to roll Enigma in it as your def will be low and you will take a speed penalty. The optimal base is usually Dusk Shroud. Builds that don’t need 156 strength for Spirit Monarch sometimes roll it in Mage Plate, and assassins have traditionally used Wyrmhide. You could consider other less optimal bases like Wire Fleece or Great Hauberk for aesthetic reasons. Even if you teleport FRW is still important in both PvM and PvP, so I would caution against using a base that is not light armour.
So this would be for PvM.. with that said, Dusk Shroud is the optimal/best base to use and for assassin Wyrmhide is optimal/best?