User blog comment:Zzxxbbaa/New Challenge!/@comment-9839593-20130830094147/@comment-13824205-20130831042728

My main character is at level 55, I am already at 7-4-4. I am doing the tower event and completed a soul gem event by repeating 2-2-1 only. It is completely possible to reach 8-1-1 by level 50. You don't have to complete Chapter 8, just get the sealstones daemon is fine.

I think it is definitely possible to do quite a few events, including 2 tower events and soul gem events. Soul gem events don't really have to take up HP as long as you don't repeat storyline. Same thing with conquest events. The only event that actually "waste" HP here is tower events!