A small dilemma.

So as most of you know, I already have two stories I have active. Finding Daddy and Is This What You Call A Family?. Well me being me, I had another idea that I am really excited that I thought of and, me still being me, began to work on. It's another Avenged Sevenfold fic (because that's all I'm really good at), but unlike the other two it's an actual love story. The only thing I'm anxious about is that if I put up a third active story, one of my other stories will either become dull or I will hit a block on it. It's happen before and I don't know if my mind's mentally advanced since the last time to be able to do it now. So I wanted your opinion if I should give it a shot or not.