Hi,
With regard to the start time, how about 12PM?
Normally we'd start earlier, walk around then have lunch. I guess the enthusiasm for lunch in a cafe/restaurant is limited in the current situation, so I was thinking of a bigger breakfast then get a coffee and snack whilst out and finish before it gets dark, around 3PM.
If the revised time is agreed, I'll update the first post.
David, don't worry if you get there at 12:03, we'll wait, there's no rush to be anywhere at a set time.
Edit:
A few places of interest
https://goo.gl/maps/32XP7zGdGW11iUNeA