Bro Ho,
I suggest you use the 6000 series that you have. Last week, some group from Subang hentam a 11kg GT....
Usually the reel size that they bring is 3000~4000 series with at least 100m line...more is better lor...
Somemore when GT hentam, they will pull your line to the barnicles to cut it, then you have to tie again...more line is better ler