Question about lifter spring pressure limit

At what point does it become an issue? This is a street motor and probably won’t ever see 6k rpms ever in the setup I have for it now.

I just don’t want the lifters to prematurely wear. Then bam, another $600 has to be thrown into the top end
I’ve never found the limit of a hydraulic roller lifter with regards to spring pressure but I haven’t really tried.