The best way to decide your skills is to first figure out how you like to fight. If you prefer archery, for instance, then take the archery skills. There are also a variety of life skills to increase your dexterity, which improves archery drastically. So ultimately, you should base your skills off of your preference for fighting in this game.
However, if you're like me, just pick the way you want to fight, and do whatever life skills don't bore you. :O