I think it may be a little awkward having Buch and Pom in the pen. Both will have siliar roles that may not see much of a call for action with such a great rotation. I suppose one could be a one inning set-up guy, but I think you are right. We'll find a way to have one starter on the DL to start the year.
Remember, the DL has been changed to 10 days.
The side benefit of doing this would be to free up a slot for the three guys without an options remaining: Abad, Hembree and Elias. I really like Hembree, and we may want to keep a lefty around in Abad. Assuming 12 pitching slots to open the season, although I guess we could go with 13, not that we no longer have a DH-only player on the 25 man roster, here's how I see it:
SP1 Sale
SP2 Porcello
SP3 Price
SP4 ERod
SP5 Wright
SP6/Long Relief: Pomeranz
SP7/Long Relie: Buhholz
Closer: Kimbrel
RP2: Thornburg
RP3: Kelly (until C Smith returns)
RP4: Ross
RP5: Barnes
RP6: Abad
No Wright, Buch or Pom? Then we can keep Hembree or Elias or maybe even have Scott on the 25 man roster and DL 2 from Abad, Hembree and Elias