Any item that works on pure luck is banned, that includes Focus Band, Razor Claw, Razor Fang, King's Rock, and anything else that may or may not have an effect.
As far as the rematch goes, I was ok for that battle because I was helping you sort out those kinks, but the rematch would have to be a proper gym battle and as such you would need to shake up your team a little bit because my gym only allows a max. 3 OU's for both challenger and myself, and your entire team is OU.