What Should a hOllows stats be? 2x strength than rei, 2xrei as strenght, tons of def? I really want to know.

Hollows need a bit of everything. Rei is definatley useful since Cero will do more damage than your regular melee attack for a long time. But you do need Def, and Att, since Cero can be hard to hit with. I'd say it's Rei, Att, then Def. But later on it's easy to get Att and def from hollow kills, so focus on it early. But, don't fret if you haven't much Rei now, it'll catch up eventually. Bottom line is, focus on Att and Rei to start killing NPC Hollows, your Def will catch up eventually.