Should I be scared of chicken livers? Can I make them less scary? (Ragu Bolognese)

I am planning to make this Ragu Bolognese. The recipe looks so good, and I am due for a fun freezer filling project.

The thing is though, that I hate, hate, hate liver.

On the other hand, I really don't want to miss out on anything.

Part of what I hate about liver will be mitigated by pureeing, because the grainy texture really puts me off, but I also hate that chemically, metallic, toxic nastiness.

Are there any Bolognese experts out there who can reassure me? I'm told that the liver really hangs out in the background, and can't be picked out as it's own flavor. I have no problem believing that of the fish sauce that comes later, but liver? Really?

Is there any way I can get the effect of long simmering the livers in the sauce but adding them later (or at least maybe half of them later) so that I can add them to taste?

Also, does soaking them in milk make them more mild?