Blade of Justice + Raise Shield leaves room for a single attack, if you don't move. You'll have Retributive Strike, Shield Block and Divine Grace competing for your single reaction.
Also, why isn't Smite Evil a champion power? Right now there are only Lay on Hands, 3 litanies, Hero's Defiance and Paladin's Sacrifice. Lay on Hands d4's without feat investiment aren't that good, so there is very little reason to focus on CHA.