i got myself to Gold V, i started the Game about the end of s2.
My Pool was like this, and instead of playing only 1-2 "op" champs get a championpool of viable - or even so called "op" Champs.
Top: Shen,Singed,Renekton
Jungle: J4, Elise, Nasus
Mid: Wukong, Nidalee, TF
Support: Thresh, Sona, Janna, Nami
ADC: only Ezreal, i suck at adc.
if u rly want to climb to Gold V u should never flame at ppl, just stay cool and try 2 win Team fights, try to coordinate your Team(e.g group up at Dragon, do Baron bait).
Also u should usually pick what ur Team needs, and what the enemy team has, so if they have a Vayne u should consider to pick Nasus, if enemy top is Shen u might want to pick Singed and so on...
Gl for your next Ranked games
oh and btw, this might be not so important as one usually doesnt Firstpick aka ban champions but what i usually banned was sth like:
Vayne, Zed, Zac, Blitz.
maybe ban Thresh but i usually pick him up, when i have firstpick