As the roster currently stands Mike Montgomery is clearly one of our 5 best starters so adding a starter really adds a reliever too so lets look at it like this...
Locks...
Lester, Quintana, Hendricks, Chatwood, Montgomery.
Morrow, Cishek, Edwards, Strop, Grimm, Wilson.
We know we dont want Montgomery starting so you know we have to add a SP which moves Montgomery to the pen which gives us 7 locks.
That means we either believe in Dillon Maples an awful lot or we're gonna add a reliever too.
Ill take Holland and Cobb.
Dont waste big money on position players unless one falls in our lap.