High Altitude, there are two valid sides to this discussion. If your dream is to build a boat, choose a plan that will challenge you, with lines and complexity that appeals to you and yet still fit within your ability and resources. If your dream is to get out on the water, build something that will get you there within your time frame. Any discussion with sailors will bring up a myriad of features that you need for safety and/or necessity - but take the advice of Lin and Larry Pardey, well known for their mantra, "Go small, go simple, go now." A boat project can easily become overwhelming, and many take longer than originally planned, delaying the departure date indefinitely. Many, many people have done extended voyages in boats a lot smaller than a CS17 - in the fall of 2004 we were in Bell Harbor, downtown Seattle when we met a gentleman one evening tie up to the floats in an overburdened canoe. He was passing through heading north, and his smile left us with no doubt that he was one of the happiest individuals in the harbor. We are currently in Alaska house sitting for friends met on the water that have rowed extensively up the west coast - Seattle to Skagway, the Yukon River from Whitehorse to Nome, the Mackenzie from Hay River to Kotzebue, as well as the coast of Labrador, Norway, Svalbard and parts of Greenland (Rowing to Latitude, Jill Fredston). If your intent is to spend two months on the water in one of the prettiest areas of the world, any vessel will do and will provide you with an unbelievable experience you will cherish. If the CS17 is the one that catches your eye and it fits your ability and time frame, then believe in yourself and I'll be cheering you on. Good luck!