Oh how I wish Monk had a guide to VV3!

I love VV3 so far but would love to have a guide as to what to upgrade and in what order. I got level 2 of restoration first, followed by level 1 of Nature (too worried about food to go with my heart and choose magic ;-) ) but now don't know whether the most important next step is aiming at getting rid of the sharks or ??? Science? Leadership?

Any help would ne appreciated! I love me my spoilers....