I don't know if this will count as the FKT, but may as well submit and try. The current female unsupported record is about 15 min faster, but she started/ended at the Cadillac North Ridge Trail Head instead of the National Park sign and entrance that the route indicates. The extra milage includes up/down the road and part of the Kebo Brook trail, which includes some stairs.
It was a beautiful morning - about 60 and sunny. I saw about 10 groups of hikers during my route, so the trails weren't too busy yet. My asthma was flaring up a bit during this week, so my breathing wasn't super great on the climbs. But it was my only chance to attempt it, so I just went for it. The trail is easy to follow, but you do need to pay attention to where the blue markers/carins are towards the top since there's a lot of open spaces. The views are spectacular if you have a chance to look up and round.
Editor: The female unsupported FKT is flagged for being a bit short of the start/end, thus we approve also FKTs that are close but do the entire route.