Basilboy, at this point in your sailing career looking for something that you can take offshore is probably impratical. I would highly recomend a good solid fin keel boat in the 28-30 ft range. My first priority with a boat is that it is fun and has excellent sailing and handling characterstics. This may mean sailing out of a berth or harbour if your motor dies. A Westsail may not do that particularly well.
I would suggest that what you meed is much more experience, the more capable and confident that you are, the more relaxed she will be. It is not a function of the boat but the capabilities. Lots of crusing or racing with other sailors would likely help a lot. I have a friend with a Westsail that hardly ever leaves the dock.