i've been using
Sal Floyd as a starter and he's on pace for 165 very effective IP with 52/30 STA/DUR.
as long as your guy isn't giving up too many baserunners, i'd bet you could coax 150+ IP out of him as a starter. he's probably good for 120 as a Setup A, but they will likely be higher leverage.
it really just depends on what needs more help- your rotation or pen. i'd be compelled to stick him in your pen since his P1 and P1 are easily his best pitches.