Hmm, cabbage doesn't sound good. I'll avoid dry hopping with the chinook then. Might put more chinook in but at 10 minutes, and move the cascade up to 5 mins instead. I'll then dry hop with cascade,
Northern Brewer (pellets) 30g @ 30mins
Chinook (flowers) 50g @ 10mins
Cascade (pellets) 20g @ 5...