in case anyone wants to know how to do this
Yall, remember to mass edit your post history at least a couple of times before deleting your account. It will take a while (it took various hours to nuke 8k+ comments from my history) and time is getting shorter as we probably won't have access to automated tools once July comes.
Remember that Reddit complies with GDPR by anonimising your comments, not deleting them. If you want to nuke your post history, you have to do it now that you have the chance.
PowerDeleteSuite, Redact.dev, shreddit should all do edit+delete.
I personally used this fork, is slower but gets 100% of your comments and you can deselect the delete check to do more rounds of editing to reduce the risk of rollbacks (I've been doing a round every few days for a while):