I would take the deal, giving away Pence for Bourn...straight up that's better value in 2013 and in the future.
I would then keep Medlen and Bourn.
That would leave you with Stanton - RF, Bourn - CF, Cargo - LF
I would then offer Headley (and one or two other players from your non-keepers) to get Wright.
Headley + Ike and/or Skaggs and/or Niese
If you provided the roster for the Wright owner, might help with some possible suggestions on an offer that improves both your squads...but...
..with Bourn, Stanton, Cargo and Headley...you have a well-balanced roster...I wouldn't touch your roster to get Wright unless you kept that balance.
10-team mixed keeper league (15 keepers), H2H - 1 Win R/HR/RBI/SB/AVG/OPS/W/CG/SHO/SV/K/ERA/WHIP/QS
C - S. Perez
1B - A. Rizzo
2B - J. Kipnis
SS - T. Tulowitzki
3B - A. Beltre
OF - M. Trout, A. McCutchen, B. Harper
UTIL - J. Upton, E. Hosmer, A. Cabrera, EMPTY
DL - G. Stanton, K. Youkilis N/A slot: J. Profar
PITCHERS: (Lineup: 4 SP, 2 RP, 2 P)
SP - S. Strasburg, A. Wainwright, G. Gonzalez, M. Moore, K. Medlen, H. Iwakuma, S. Miller, W. Miley, A. Cobb, J. Garcia, H. Ryu, T. Cingrani, J. Hammel
RP - A. Chapman, A. Reed, J. Henderson, J. Tazawa, H. Bell