If the very high OBP out of the 9 hole isn't enough to play Davis, then perhaps Turang is worth adding since he can play CF. Otherwise, I'd wait for opening day.
I think expecting any offense from Turang immediately is a mistake. He's taken a little while to get going at almost every level, which is unsurprising as he's been very young for every level.
If he's expected to fill an infield utility role, I'm also wary. Sure, he's an elite defender, but he hasn't played any 3B in the minors, and hasn't played 2B since high-A ball three years ago. 2B might be his position for next year, but he's going to get innings all spring to be ready for it.