Who to ditch for R. Murphy?

[bb2811]

Hi - Looking at my backline, which is my weakest line - wanting to bring in R. Murphy and not sure who to bench/ trade.  It's a bit risky but the lure of R. Murphy against Melb is drawing me.  Thinking of trading/benching Hanley noting Geelong at skilled stadium is pretty hard.  Also Gibbs is eratic, and Ibbo may not perform because he has been out for a while and hasn't played all year at Etihad.  Trent McKenzie is likely to do well against GWS.  Or should I just leave the backline as is?

Current backline:  Goddard, Enright, Gibbs, Ellis, Hanley, Ibbo.  Emg:  Malceski, McKenzie
Thanks for your help :D

[Ricochet]

flower mate thats tough
Goddard, Enright and Ellis have to stay

Gibbs: Has been very poor lately and only decent score (104) in the last month was after kicking 2.0.
Hanley: Does have Geelong but last time he still had 19 touches even after a bump to the head in the first quarter.
Ibbo: This could be anything. After resting key defenders and bringing in some inexperienced ones, I see Ibbo and Duffman playing lockdown roles this week. Faulks will go to the FF and Silvagni/Taberner will both go through CHB. But with such an unsettled side, Ibbo concerns me.
Malceski: Hawthorn will target him like they did earlier in the year. Osborne isn't playing (kept him to 9 last time) but they will replace him.
McKenzie: Last time he played GWS... 112... nuff said

Tbh mate its touch and go but I would field

Goddard, Enright, Ellis, Hanley, McKenzie, Murphy (trade in for Malceski)

[bb2811]

Yeah it is a tough one - am thinking I am just trading for the sake of it :-\