There aren't many level one buffs with long duration- Magic Weapon, Ironbeard, Bless and Shield of Faith are the only ones that would be of much use to us. There are some others, but not really things that would help in this sort of a combat situation.
Really if that was the plan we chose to move forward with, I'd say to use Magic Weapon on a shank and use it for the coup de grace. That way the DC to not die will be 20, and even if he doesn't auto die, you already did ten damage with the opening hit.
Also, I only just noticed- how can you cast command six times? I mean to have five bonus level one spell slots at level one, you'd need a wisdom score of like 44. I'm not saying you can't do it, I'm just wondering how you wound up with that number. I mean I have two spells and then my domain slot.
I'm not gonna post again tonight, I'm going to bed. Look forward to continuing on about this later though, I love talking plans for D&D :D