I'll go with the 2 that give us the best chance to win. Since the other one can pitch from the pen, it's not like we're losing anyone from the 25 or 40 man roster.
The bigger question to me, is who makes the 25 man roster out of the 3 out-of-options RP'er?
Abad
Hembree
Elias
We can get creative with DLs, but I think, in theory, we'll have room for none. Once Smith comes back, we may have to choose again.
I have our 7 pitcher pen as follows:
Closer: Kimbrel
RP2: Thornburg
RP3: Kelly (until Smith returns)
RP4: Buch, Pom or Wright
RP5: Buch, Pom or Wright
RP6: Ross
RP7: Barnes
RP8: Abad, Hembree or Elias
Also: Scott, Workman, Owens/Johsnon, N Ramirez, K Martin, L Ysla