I can do positivity. And carry stuff. Just have a 1430 race start for Lingmell on the 25th... Allowing 90 mins between the gun and being 'ready to go' means I could leave Wasdale Head at 1600, give or take. When would your schedule take you through Wasdale? I could short-cut to Black Sail Pass or do leg 5 as alternatives.
Not sure I'd keep up on the super rough ground/ascents, but could meet you somewhere in the middle of leg 4 (been spending lots of time out that way recently) for some positivity! Or I may be able to keep up by leg 5 ;)