So, this is the proposed route. Pretty much following the National Cycle Route 2 with a few adjustments. The following is taken almost verbatim from the Sustrans website.
1. Dover to Hastings - 52.1 Miles
National Route 2 starts or finishes in Dover following a cliff top route to Folkestone and crossing Romney Marsh to Lydd and Rye.
2. Hastings to Brighton - 40.7 Miles
The route between Hastings and Brighton runs mainly along the coast but heads inland between Pevensey and Seaford to avoid the South Downs.
3. Brighton to Worthing - 12.1 Miles
National Route 2 continues west of Brighton to Worthing via Shoreham.
4. Worthing to South Mundham - 22.2 Miles
National Route 2 in West Sussex is still being developed and currently open sections exist between Littlehampton and Bognor Regis only.
5. South Mundham to Christchurch - 61.6 miles
Short unopen sections exist through central Portsmouth; south of Southampton; out of Brockenhurst (New Forest), and within Christchurch but otherwise Route 2 is continuous across Hampshire.
6. Christchurch to Lyme Regis - 70.0 miles
Along Bournemouth seafront and over on the Poole Harbour ferry, National Route 2 continues to the east of Dorchester and then begins again on the west of Dorchester to Raymond’s Hill, north of Lyme Regis.
7. Lyme Regis to Dawlish - 40.2 miles
The strand of Route 2 from Raymond's Hill to Lyme Regis is not yet open, so Regional Route 52 provides a link to rejoin Route 2 the other side of Lyme Regis. Route 2 then continues through Seaton, Sidmouth and circumnavigates the Exe Estuary via Exeter to Dawlish.
8. Dawlish to Plymouth - 41.9 miles
The proposed Route 2 via Newton Abbot is under development so Route 2 restarts at Totnes and continues via a moorland route through Ivybridge to Plymouth. A coastal alternative route from Totnes to Plymouth is fully open as far as Malborough near Salcombe.
9. Plymouth to St. Austell - 42.2 miles
The main Cornish section of the route will link the Cremyll Ferry in Plymouth with Lostwithiel via Looe and on to St. Austell. At present this section is only open between Par and St Austell.
Then my own bit to complete the journey;
10 St Austell to The Land's End Restaurant and Bar, Sennen - 55.8 miles
I think after all that I may be ready for a train to London and to decide what the shape of my life is from there on in. If that's not enough thinking time and head space then I'm really in trouble.