There is no moderate position on abortion. The questions involve do not admit to it. They are binary questions, and as such they must be answered in either the affirmative or the negative.
Does a new human being come into existence at the moment of conception? The answer can only be yes or no. Any attempt to speak of acquiring humanity over a period of time is bunkum. Substance does not admit to degrees. There can be no almost-human or kinda-human. There is only human and non-human.
If it is a human life then it is either innocent or it isn't. There can be no hemming and hawing about this. Either the new life is culpably guilty of crimes that justify executing it or it isn't. But if you think it is, then you had better explain what crimes it is guilty of and how it possesses culpability.
This is what it comes down to: Human or non-human. Guilty or innocent. Refusing to choose isn't being "moderate" or "conciliatory." It's simply ignoring the principle of non-contradiction.