Like Salamence said, Rampardos shouldn't be in an Standard OU team. Neither should Archeops. I can understand since he's your favourite Pokemon. But like Rampardos; he's a glass cannon. He's weak to Aqua Jet and Bullet Punch, both of which are quite common.
Chandelure isn't really that good. Sure it has a nice 145 Base Special attack, but that is really all it's got going for it. Also like Salamence suggested, replace Hydreigons Rash nature with Timid. I'll rate it some more once you've 6 Pokemon.
if you want good Pokemon for your team go stalk the good trade threads in the trade corner. ;;