That's wild! After getting P4 and P5, what do you even do with coins at that point?
Accumulate more.
Some folks sponsor contests; some "toss" them around to newbies to get M+ or P1 or something. Just depends.
Bro how long did it take you xD
Got P4 last August at a discount that left me with around 20K or so in my account. Been chatting and collecting interest ever since.
The thing is, I'm probably not even in the top 20 here, maybe not even the top 40. I don't do art and I don't chat nearly as often or nearly as much as a lot of folks around here. If you hang out a bit, engage in conversations, post some funny shit, etc., you'll start to accumulate. If you're an AI artist you can earn even more, faster, if you can post in the art threads.
Even if you don't have access to the M+, P1 or P4 threads, you can still create art for them and get it posted there -
@mime helped people with that, and I think that's still the case, at least to some degree. So, if you do that kind of thing, check in with Mime or one of the Mods and see how you would go about submitting. First thing you'll need to do, though, is understand the guidelines of what is acceptable at each level - there's a page for that, so that's where I'd start if it's something that interests you.