If you want to do well in Seniors/Juniors just copy a winning team, I guarantee you will go far. The quality of the Seniors/Juniors division is much inferior to the Masters as the majority of Seniors/Juniors lack experience.
Any teams that are too different won't get anywhere, so just stick to...
Hey! I've got exams up till the 20th, but I should be able make time for a match as I'm on study leave. My timezone is GMT and unless I'm at an exam, I'll be available, so what time is good for you?
Oh yeah, I completely forgot about STAB.
I would also change Wide Lens on Metagross to Occa Berry otherwise Heat Wave is going to wreck. I would also consider switching Charti Berry on Chandelure to Focus Sash.
I've only had a quick glance at the team and I'll update this post when I get the chance to (currently breeding for VGC :P).
Metagross should have Iron Head over Meteor Mash, as I know more than most that a single miss could cost you the tournament and for five less base power you get the...
Doctor Who is my favourite tv show lol.
I've been watching it since Rose Tyler was the companion and must say Amy Pond is my favourite companion so far :P.
I was telling all my friends a month before we found out who River Song was as it was pretty obvious that she would be Amy's daughter lol...