I lived on the coast of Oregon for almost twenty years, and only burned ocean drift wood. It was my only source of heat for my living room and kitchen. Just two things.
1) you really need to let it dry out for a few months if possible, so overstock, cover in a dry place and itll be fine, I found outdoors preferable, but covered.
2) You will go through saw blades faster because of the salt content and various other reasons, so either learn how to sharpen whatever kind of saw blade you will be using, or find someone, who will do it unexpensively for you. Maybee barter some wood for sharpening.
I always used a two person hand saw, so I dont know if this would apply to a power chain saw or not.
Much regards