mabey rog can elaborate,but id just get on with it especially if its a 1 off.
you might have more than 11 depending when your in the queue at birkenhead .they wont load you all in the 1 go,youl be shuffling up the dock from the back of 9 till your squashed into the deck.
itl be at least 7a.m even if its on time before your off and parked up.
if its any help,theres a big massive couch in the shop,get your boots off and sprawl out on it and do a selfie,then crack on drive.
or tell them i met you in a campervan and let you kip in there.
never say never… 