Should I fill in ranked?

I'm only silver 4 so it's not a big deal but I'm wondering if fill would make me climb faster and get better. I have a good champ roster. Jungle - Fiddle, Skarner, Quinn, Bard Top - Tahm Kench, Jax, Bard Mid - Talon, Karthus, Bard Support - Tahm Kench, Thresh, Taric, Bard ADC - Jhin, Thresh, Bard
Report as:
Offensive Spam Harassment Incorrect Board