Recommended 3rd plat dose

I’ve done a few 2nd plat doses and i think im ready for 3rd plat. I went from 220mg to 260 to 330 and have seen anything but CEVs. I want to actually hallucinate so i was thinking of jumping to 480, all these were Hbr. is this too much? i might switch to freebase, and if i do what would be a good dose for that to start out. i weight 145. i’ve used dex calc but i just want to hear from experience