Plan A: SWT to London, FNRttC to Brighton, slow cycle home up A23 cycle path to just south of Crawley, cut across Rusper - Newdigate to Dorking, A24 to Leatherhead. 105 miles, within my capability, as I did it last year.
Plan A now abandoned.
Plan B: cycle 20 miles into London first, FNRttC to Brighton, then very slow and probably progressively slower cycle home. 125 miles, would be a personal most in a day since I was a student 25 years ago.
Anyone else going in the same general direction and who interprets "slow" as literally as I do and I would be delighted to be allowed to tag along with you!