Hydr lifters, adjustable roller rocker arms, had some noise, tried to adjust preload did i mess up?

The lifters are sitting right in the main oil galleries, and so are seeing whatever oil pressure and volume that your pump can put out. When the oil is cold, that could be up to say 70psi. If the lifters are working right, they should stop clattering within seconds of start-up.
Furthermore, once adjusted correctly to say ONE turn, it should run relatively quiet for thousands and thousands of miles; I mean that is the whole point of running hydraulics.
When the lifters all get noisy, over a short period of time IMO, there is something nasty going on, and the noises you describe, also IMO, should NOT be.
I can understand one or two lifters having lost their initial preload over a year or say 8,000 miles. But not all of them. I adjusted mine to 1/4 turn on day one of the cam install, but inside a week I had a tick So I went back in and set it to 1/2 turn. It went on that adjustment for several years. Then over the next ten years, one by one they started ticking. I think there are maybe 8 or more tickers now, just enough to notice; but I just leave them alone.
IMO you got too much and too many, noises. I think I'd be wanting a closer look.