Against most mobs you'll be using SotC every 30s, and if you have Consecrate, Judging Crusader and R1 Consecrating every 8 seconds. I personally don't take Consecrate until the 50s since Repentance gives you a huge survivability and damage boost through Judging Command (this is the only time to use Command unless by some divine miracle you find one of 3 weapons with a slower speed than 3.6 while leveling).
You *can* do more damage than just using SotC and auto-attacking, but the marginal killing speed increase isn't anywhere near worth the amount of mana it costs you. You will have to both eat and drink after every mob if you use everything, or drink twice if you elect to skip food in order to just heal yourself. This downtime will greatly increase the time it takes to level, and is in no way worth it. Just use SotC and you will only have to drink every 4 or 5 mobs since you won't be casting during combat, just SotC every 30s.