It all depends on your rooster. My silkies were 2:2 for 6 months and we had no problems. Actually, the only problem we have had was an ameraucana breeding a maran because all the other ameraucanas were broody. Silkies are quite docile and gentle when breeding, so you shouldnt have a problem.
I am not sure if I am in the right place for this question, but I have two silkies. One pullet and one roo. Talking with someone in the feed store yesterday, he mentioned tha I need at least 3-4 more girls or else the roo will take a toll on my one girl. Is this the case or will they be fine just the two of them?