It goes without saying that it's a good idea to get the OS map before hand and plot them all out :-)
The order I did them in makes a nice circuit, starting at the south east and doing a nice ring around the penninsula. There is other stuff on there too, but I think I did the best of the best there.
Gwern Einion isn't on the Llyn, but was on my way to it.
Hope you get a good view for breakfast.