I applaud the people who know with 100% certainty what they want to do in this game.
For me I am not yet sure what I want to get out of this game and I would like to know about some of the systems like combat, gathering, trade skills, and things first a bit more before I make a choice as there is just so much you can do in this game. I don't wamt to box myself into anything just yet.
It also hinges upon how many of my friends play as well as intend to own land. Once that figure is more solid it makes it much easier to divide what we all intend to do.
I know that I dont want to be too focused into any one thing as it makes you reliant on others and if there are food shortages there could be all sorts of economic impacts or depressions if there is a disaster or bad season. Or if someone decides to destroy your crops or kill your livestock.
It also depends on how huge your operation is too. I plant to maybe have just enough to process gathered goods, forge specific weapons or armor, and grow some food so I can support myself and make some coin at the same time.