As for the proposed upper launchers... To be honest we never got to see a Connie (refit or otherwise) really open a can of full-scale whoop-ass on a target.... multiple torp launches and phaser beam deployments.
We only ever got to see the Galaxy Class Enterprise-D open up with multiple banks in Best Of Both Worlds.... I'm assuming the Connie could do the same thing.
Well we did see the Connie-Class Enterprise open up a can of whoop-ass on the Reliant in TWOK, however i'm with you on us not seeing a full scale whoop-ass
It stands to reason that the Connie Class has the ability to fire phasers from a 360 degree targetting radius (similar to what we saw in BOBW, where the Ent-D fired phasers in a circular pattern at the Borg Cube)
As for Torpedos, well we know they have a standalone navigation system and are programmed to adjust to intercept if the target makes corrections to avoid