When is the best time to rank up for moderate players?

Disgruntled_User_123

So, I have 2 5 stars and about 15 4 stars. I only have one truly “god” tier champion (Iceman). Should I just concentrate on ranking him up or should I focus on ranking up other “awesome” or “low demi-god” champions?

Clydania

I say being balanced Is most important