Thanks for all the help everyone! We have been thinking a lot, and we have changed our plans. It seemed that trying to do the Ring from the Autherley base would just be too stressful. We are now going to do the Llangollen and putter for 2 weeks. Stop and visit some of the villages/towns, moor up in Llangollen for a couple of nights etc. It will be busy (traffic wise), cause we are picking the boat up on August 3rd 2019 for 2 weeks, but we don't mind. Nothing can compare to the Kennet and Avon 2 years ago!
Now to convince my Dad I should learn how to drive this time :)