Finally, avoid players who had a year 'out of the box' the season prior as most will not sustain that level.
As such, my worry with the above:
Shaw - whilst obviously a gun and will end up amongst the highest scorers from defence, in the 7 seasons prior to last year, he had never missed less than 3 games! He had also never averaged more than 101. He is now priced to average 112. Surely his price will come down even he does somehow reproduce easily his best season (which in my experience is rare). Countrpoint is that there are few guns with strong scoring histories in defence.