We can't get TOO unrealistic. Since 2005, there have only been 31 seasons where someone has an ISO of .250 or more (showing elite power) but less than 120 strikeouts in 600 or more plate appearances (K rate of less than 20%).
And in 22 of those 31 seasons, the player has greater than 100 Ks. The remaining seasons belong mostly to Albert Pujols, the only player with more than one season like that.
Usually (to paraphrase Spiderman) with great power comes great striking out. I'm less concerned about him having good raw strikeout and walk numbers and more concerned with him getting good scouting reports regarding laying off bad breaking pitches and recognizing the better stuff he sees. The power will always be there, as will the strikeouts (likely).