Hi Chris

As Calledman says it could be wonderful but I'd say mixed!!!

As far as packing is concerned can I suggest layers. Evenings will be chilly and there is the chance of a shower. Also with the places you intend to visit make sure you have some really really comfortable shoes.

Obviously you won't need arctic gear, but a fleece, sweatshirt or light jumper would be an idea. It's a beautiful time of year to visit and not too crowded either.