I've beaten the game at level 8, I think that the lowest but i was at a low 8 so it might be possible for a 7, and I thought it would be interesting to try to get the lowest time at the lowest level.

Generally games dont make speedruns with one run in the category. if other people start running the same category, it starts to become worth considering

Like Yomkool said, the issue would be finding people who want to run that category. I know a lot of the existing runners wouldn't be into it because it would basically just be the old any% run from before glitches were allowed, which ends up being longer than normal runs and Iris takes up like a third of the run. Many have said in the past that they don't want to do it because of that.

You could propose the idea on the discord and see if people are interested or you might be able to convince some new people to start running if they think the category would be interesting.