I guess you've completed Lejog by now and hope you enjoyed the ride. Incase you haven't my comments regarding Cicerone may be of interest.
Lejog was a route I cycled in 2016. Before following the Cicerone guide I had considered joining one of the many supported rides that occur throughout the year. Back then the cost of a supported ride was well over £2k which is and was above my means. So the Cicerone guide listed overnight accommodation to suit all pockets. After shopping around I brought the cost of my adventure down to roughly £700 - 2/3rds cheaper than joining a commercial enterprise.
The Cicerone turn by turn directions were excellent and kept me off dangerous roads. It was easy to download the Cicerone route into my bicycle GPS system and the directions were accurate.
Having completed Lejog my only regret was not doing it in stages at different times; in order to cycle from Lands End to John O'Groats within a defined timescale there were so many places of interest that I had no time to stop and enjoy.
For me, the lesson learn't from LEJOG is that cycling is about the journey not the destination. That aside many people raise money from sponsorship for many great causes and reaching the destination at pace is a commitment with its own rewards.
The story of my Lejog can be found on
www.harlechjoe.wordpress.com by visiting the archive for the month of June 2016.