It is honestly hard to predict as so many things can change in 5 years. With all else being equal however, Travis.
Schoop has a 49.1% - Pull%, 28.4% - Cent% and 22.4% - Oppo%. He's near a extreme pull hitter so the shift will always take away a lot of his hits, making him easier to defend. Right now with those stats and him spotting a .343 BABIP makes me think he's getting very lucky.
Travis on the other hand has 31.3% - Pull %, 32.4 - Cent%, 36.4% - Oppo%. His hits are more evenly distributed. He may have more balls fall and as a result and his BABIP may be high throughout his career so his .347 doesn't raise as big of a eyebrow for me.
Travis doesn't hit as hard as Schoop but he makes better medium contact.
You can break it down further into their plate discipline. Schoop swings at more outside pitches than Travis and when Travis does swing for the outside pitches, he makes better contact than Schoop does. Travis doesn't swing as much pitches as Schoop does inside the zone, but he makes more contact on the pitches.
There is a lot to like about Travis' game and hope his shoulder can hold up. I'd take him over Schoop but again, a lot can change in 5 years. Travis' injury may hamper him (*knock on wood* it doesn't) and Schoop can start hitting balls to the opposite field. Using 1 year of data isn't exactly ideal, but the only thing we can go by at this time.