Ok you need a striaght chain catcher. You can striaghten yours out but I would advise against it. £10 approximately if you can find one. I can sell you one if you want.
You have the right rear mech.
You really need a outter chain guard also. As chain will tend to come off that way.
I recomend the prolite combined chainring and guard. Its light weight and the chain cant bend either sections if it jamms between them which I have had happen a few time.
About £25 on ebay.
Hope you can get it running well.