[Infighter] Dash vs MP recovery

im still trying to decide whether i want dash or not, MP recovery seems good, but then again, so did Drain, and i never did get around to using that(dont even have it on a key). And 9 accuracy doesnt seem like much. Plus second and third jobs get a skill that boosts accuracy, but only temporarily in the third job skill, but it doesnt seem like there is a downtime

Tell me, how much dex = accuracy again? i was thinking it was 1 dex = .8 acc or someting like that, or was i wrong.

Is it going to be an issue potentially HTing? At least hitting it.