I would go with:
"Edit in PP then C&P or import into Ae losing dynamic link but retaining seperate clips for individual correction"
for 2 reasons.
1. if you have any fades between scenes with different CC, you need to have done the CC before the fade.
2. normally you will want to apply the same CC to every occurance of a certain clip. If each clip is on its own layer, this will be much easier.