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Why do you have Sucker Punch on a Custap Golem? Replace it with Explosion, because you have priority anyway.
That's the set you should be running. I think they're nearly identical.
This team lacks synergy, you may want to take a lot of Plusle's advice.
I second this. A Nitro Charge set is very effective partnered with the (yet to be released) Shadow Tag ability. Trapping a Pokemon who can do nothing to Shandera and setting up some speed boosts can turn into a deadly sweep.
Especially considering Shandera is immune to the most common priority...
Please add legitimate counters.
Also, I think I should fix this for you.
I really don't see the point in having two scouting moves. U-turn is going to do little or nothing. Support moves are just radical suicide. Go all attacking, and make a support set if you want.
Just a nitpick; Forretress is not better than Skarmory. They both do entirely different jobs. Go for Toxic on Burungeru, and you want to consider Overheat on Shandera.