How do you not know the EV's? Did you train them?
For competitive battling, those kind of items aren't fit

With exception of the Focus Sash.
And I can see this failing because of the way you posted it. A competitive team is built upon checks and supports. Basically, you have pokemon to "check" threats and pokemon to support the team by being healers, baton passers, etc.
Of course, the sky's the limit. But usually the above format is used, even very loosely.