So, I got my Relic+1. I have full Darklight on all slots. What's my next step gear-wise?

Should I try getting on the craft gear i70 HQ (all parts)? Or should I try my luck in Coil for the drops?
Also, I have like 500 myth. Should I go for a part (for the time being until I get Coil drops? Or will I be totally fine with Craft/DL?) or saving up for my sub class, which is kinda AF2 heavy (Bard)?

I'd really appreciate if someone can give me some advice. I know you guys are discussing about this (kind of) right now... but I still have no idea what should I do next gear-wise.
I would also like to do some comparison for myself, but I've to admit, I don't even know which stat is the more important for a MNK. u-u

( I hope u got my problem. English isn't my first language. ) Thanks in advance!