It's not really too much to have both feats at 1st when you really think about it. Cleave is only useful if you fell an opponent. You then get the extra attack to take another shot. If you happen to kill another opponent and actually use Great Cleave, more power to you, but it's unlikely that these feats could be abused that early on with such a low BAB. Not only that, but Asinjin makes a good point that few Clerics would go down that feat tree. Even if they do, they still need the prerequisites for those additional feats regardless.
