Ment, Sky, my brothers, should we take everything or forget about it?
But I don't see the point in not learning flight and firearms; it's a powerful combination with your staff. In general, earthquake is also good, but you can wait with that...
Also, keep in mind that in the Academy, if you learn the elements, you'll get a discount on learning magic of that element. For spells above, the cost will be 375. For other spells that will become available to you, 750. But it's all worth the time, money, and OD; it's better to have something from the start.