Can if your card is activated for oversea transaction.

Yes I think you can safely assumed that.

CC address put your malaysia address no problem.
Account address must be UK saje.

There's 1 thing I needa double confirm.

So we have classes crossover, which means we can have 1 main class with skills from others classes (with the condition that we have enough level in other classes to use their skills) right?

So only SOME of the skills can be shared right? Some skills are bound to its main class (eg, archer) so the only way to be able to use it is to become archer, but i can still import skills from other class.

Is there a limitation to how many skills can be imported/shared?

I need some enlightenment on Summoner. How they fare in PVE and Boss Fight? What are their roles in a party, etc