Look for a 2011 Flow Era. Really a well built board that can handle pretty much everything. Was a well priced board so on sale now should be even better. The 5 radial sidecut they came up with for I-rock is moeny and still one of the best I've ridden.
This is a good suggestion.
My main suggestions would just be to pick up some good deals on mostly all mountain gear. Because you are a beginner, it's difficult to say what riding style you will prefer. So for your size I would find a good, but inexpensive 158 all mountain freestyle board that will be versatile enough for you to find your niche, and then know more of what you want for your second board.