The Shield-bearer Paladin human was my first character before I rerolled as a wizard. It was quite weak in melee, thus why you should probably not dump points from Might. You don't want your main character to deal mediocre damage while the rest of your party look awesome on the field.
I don't think intelligence is important, and most of the time Perception and Resolve seem to come up in dialogues. I would say perception is the most important for a tank, and so is resolve. You might also want some points in Might since you still want to be doing damage; otherwise he'll just sit there like a rock, like Ceranai said. And with high enough deflection from maxing Per and Res, you could probably drop Con to 5, as Paladins have high endurance and health increases at level up anyway. I'm not sure, but stats like deflection probably don't increase at level up, which is why you want to max it at the start. Remember you're stuck with Attribute points, as they do not give more at level up.
Also, try to be honest during quests, and diplomatic when solving a conflict between two parties, as this affect your disposition.