And to be constructive, though I do not claim to be Empress..
Outbound looks fine, no worries
Return, C will move with J - this happens on some routes (e.g. YVR-SYD) as opposed to e.g. YYZ-LHR where you will see J9C0 etc. If it is J4C2 it will then go J3C1 J2C0 etc if only J is sold. If C is taken - it is not so good but my guess is that you will still see a C seat when you call, just be quick!