10m ADV is not going to give you much in terms of accuracy of projections. Folloiwing the advancement of his ratings and projecting those out yourself will give you a much better picture, though since he's only in his first full season you don't have a lot to go on. Still, he's +8 in control, +7 in each of his splits, and +4, +4, +4, +5 amd +4 in his pitches. That's good advancement.
Low velocity is not that much of a concern. It just means less strikeouts and more balls put in play. It's a secondary rating, a "nice to have" but not a critical rating.
I'd be more concerned about the extremely low GB/FB rating. I'd want him to pitch in a -4 HR park, because he's going to be giving up a lot of long fly balls.