The local riders call that stretch through the farm as the "Missing Link", it's not that bad, I ride it roughly 5 times a week*. The cycleway alongside the railway could be busy if you don't get a move on through the Wirral countryside and arrive there with lots of novices/kids. Hopefully they'll have someone to hold the gates open.
I have probably seen you on that route at some stage then, I have been riding home that way recently to Ellesmere Port station around 5-5.30 ish