I’m doing the full bore again, it’s a pleasant ride but very, very sedate so please don’t expect anything other than fireroads and the odd bit of rooty single track. It’s a cracking event myself and my mates are doing the full distance as part of our training for ard rock, completely different event formats but time in the saddle is important.
You will not need anything substantial tyre wise. Go light and fast rolls my if I were you
Edit: just re-read your post and can see you have done it before.