2017.......
Now, I've said in the past (2011), that the sleep deprivation and the need to balance making the cut with getting enough food & rest bothered me. Earlier this year, I had changed my tune a bit, and posted in this very thread that I was reasonably confident I could do it, just lacked the inclination.
And now.......well, I've looked back over the data from the big rides I've done over the last two or three years. On overall (elapsed time) average I'm quick enough, even with a few lumps in the way (that run to Swansea was 360km in a smidge over 24 hours, door to pier, to give one example). I can handle low sleep.....
Tempted.