WCS all the way if he is there. Sorry but he has played against the best competition daily in practice than Porzingis has all all year. If he is there, I would wager where we are picking now, he will not be.
A lot of UK bigs who were not offensive studs in college went on to do well in the pros.
http://statsheet.com/mcb/players/player/kentucky/demarcus-cousinsCousins averaged 15 PP, 10 RPG, 1.8 BPG and 56 % FG at UK in 23.5 MPG
WCS averaged 8 PPG, 6 RPG , 2 BPG and 62% FG at UK in 23.6 MPG.
No reason to think that Cauley-Stein stat won't go up as a pro as well. The pro game is a mobile man's game and he is very mobile. But he is not a pure offensive player but he is an elite defender, who is athletic and can run and doesn't need the ball to score. If you build around JS he is prefect, but I am not sure he can spread the floor like CBS likes.
If our team needs talent then lets take the proven talent!