OK, so in my PC it was incredibly slow so I made a test SMF and deleted a ton of users, topics and replies and left about 7000 replies, 600 topics and 800 users, uploaded to a VPS and the conversion was really fast.
As far as I can tell the import went well, seeing the numbers I noticed a few topics/replies missing but I’m not sure if it’s that they were lost or the SMF statistics are wrong.
Anyway I’ll proceed to test with the full database to see how it goes.
Sweet, I tried to make an importer based on the example and the phpbb but I couldn’t make it work, thanks a lot for the effort, I’m going to try it right now…
