I scored an airbnb in Loudéac, it's a km past the control on the outbound leg and only 100m off the 2019 route, so hopefully there's not massive changes in the route, but it should work out well for me, it did in 2019 when I had one a bit farther away from the control... I arrived at Loudéac right in the middle of the bulge. I'm planning to be fitter and/or faster to Loudéac in 2023 so I'm still trying to figure out what start time to pick, last time I had over 6 hours of stopped time before I got to Loudéac, definitely cutting that down as much as possible. I was thinking of starting much later in the evening and hopefully arriving in Loudéac in the early evening so I can eat a nice meal and get a good night's sleep.
I've been waffling about doing the 84h start but to get to Loudéac in the evening I'd really have to beat my best time on a 400K and keep it up for another couple of hours...