At what point would you step up to ferrea hollow stem valves

That's not a lazy cam, but not killer, the best way if You want to cut grams would be beehives with the small retainers. If You use the springs Howards recommends, float shouldn't be a concern, 7K+...
Cool, thank you I do have the howard's springs. I suppose sometimes I overthink things and ask questions like this thread just because I don't know and end up finding some more guys to help me & all of us out