defenders or Mids?

[Slammer]

Hey guys, can I please get some advice.
Not sure which way to go. Another premium in defense or midfield.
Have been thinking of a few options:
A) Matera to Smith and then Lower or Thompson to Adcock
B) Matera to Smith and then Swallow or Harris to ROK
C) Lower to Jacobs/Hibberd then Thompson to Adcock
D) Any other suggestions??
19 trades $14K
Leaning towards A (with Lower) with view to upgrade Harris or Swallow later but with GC bye was thinking i should offload one of Harris or Swallow

My team:

B: Goddard, Deledio, Gibbs, Murphy, Suckling, Duigan, Thompson (Lower, Buckley, Stanley)
M: Swan, Pendles, Judd, Cross, Heppell, Swallow, (Harris, Krakourer, Bewick)
R: Sandi, Mumford (Smith, Tippet)
F: Franklin, N.Roo, J.Roo, Fyfe, Goodes, Darling, Knights (Tapscott, Matera, Prestia)

Any help or suggestions would be greatly appreciated.

[Prospector_1]

... with GC bye was thinking i should offload one of Harris or Swallow
...

So long as you will have coverage, may not need to offload GC - you're not relying that much on their scores.