I know you guys hate this question but... I gotta try and ask anyway. :(

[Dualgunner]

I've been thinking, I really would prefer to stick to a caster dps as magic is what I love most, so I was wondering, how is Black Mage? Would it be a good choice to play or is it's turret style gameplay just not able to keep up with content?

Unfortunately black mage is in a worse spot than red mage. Less output than summoner and brings no utility whatsoever.