good to hear that its not important to book in advance. I find also here very helpful infos about the hotspots, so I think ten days are not enough but this is always the same. I´m prepared for the weather (winter) conditions. If anybody want to join me between 9-16 Feb. feel free to contact me.
I'm based in West Cornwall and do most of my work around the St Ives and Penzance area. I might be available around the dates you mention and could show you a few locations if you fancy meeting up ?