I am a level 20 THM and I was reading up on the job requirements for the Black Mage and it brought several questions to mind.

1.) Does anything you get from the archer class actually help the black mage?

2.) Let's say I want to go tank or healer because of instance queues (first time ever rolling a dps in an MMO, not liking that aspect so far) should I just make a new character since I'm 20 levels deep in THM or just grab the class?

3.) Should I hoard bonus points or just spend them?

4.) Is it wise to level my basic class to 50 or stop after I get a certain spell or trait?

Thanks for any and all help to these questions.