Hello, fellow ffxiv players!

Pretty newbie to this game yet. Already have a LV 44 tank, but I have decided to build up a dps. Tried out Smn, mnk, drg, nin, brd. BRD was the most cool in my opinion. But I have some questions before investing some time on this job (since I don't have much time to play) :

1) How much BRDs are needed in parties for raid, dgns, coils, trials, etc.? If songs are not needed, BRDs are unwanted?

2) I heard there is a distance penalty for BRD dps in pvp. How much is that penalty and its the same for pve?

3) There is some indicator to tell how far I am from my target?

4) What is better against mobs? Focus to kill 1 enemy, multi dot all enemies, or aoe?

5) How is endgame BRD dps (without songs) compared to others dps?

6) Any pro tips or "must know" about this job?

Thanks guys!