At this stage, given the fact that the PBN industry is in turmoil because of the recent Google updates, you might want to hold off on your purchases.
You have to understand that Google is scrutinizing carefully expired domain registrations from 2022 onward.
If their most recent update is somewhere similar to their previous updates, I would not be surprised at all if that window gets pushed back later and later in time.
The end result is all too predictable.
People who use expired domains in a lazy way (and let's be honest — 99% of the people who buy expired domains use it the lazy way) will get hit.
If not now, they will at some point in the future.
And what makes this all tragic is you put in all this work and money building up a site.
Things are going really well.
But you've built it on an infrastructure of expired domains, and then BAM!
The ax falls, and your empire as well as your income goes up in smoke.
Don't be that dude.