My only contribution as a regular west coast hiker is to consider free-standing. I've found on beaches especially it's very hard to get a good pitch with non-freestanding designs. I have a bunch of tents, and by far my favorite for wet coastal is the Tarptent Rainbow (single or double). I'm ok with condensation in the tent and other such limitations of a single wall though, so this recommendation should be tempered by your experience and ability/willingness to stay dry in a wet environment.