Welcome to the club!
If you want to go with that sort of range, you might be better off with either a Pentax or Tamron branded 18-250. Some say they are one and the same. I believe that both are out of production but can be found used, reasonably priced. That said, personally, I'm not a fan of superzooms like this. Something always suffers in terms of IQ and it's usually the spot -I- want to use.
The real answer though would be to decide what you want to do, and select the best lenses for that. Without knowing what your preference is or your budget, the Pentax 17-70 looks to be a nice all around option over the typical kit lens (there's a brand new one for sale in the
marketplace now).