Paladins cannot lose piety, so GG penalties are nullified. And believe me, Enlightenment, Potions, and protections go very far.
Also, GG and Dracul are always the gods to go with, unless under certain strange circumstances, but GG is better if you have a way of sustaining yourself without potions (CYDSTEPP, HALPMEH, Double regen, etc.) but if you don't you usually want to convert out of him after humility, absolution, and possibly enlightenment.
I speak chaos.