I'm sure you can do it, you came past me easily at holme moss and I'm (possibly foolishly) not worried that I won't finish 3P.
Getting round under 4 hours though. That is playing on my mind.
Also, does anyone have any advice about what shoes to wear? I've walked it in roclite 295s but they felt a bit heavy. was thinking either inov8 190s or some adidas racing flats if it is very dry.