Overall, I like this build. Though the Antiproton could be switched out for Phasers or Disruptors (maybe even Polaron) as those are the main energy types used for PVP:
Phasers have a small chance of knocking out a random subsystem for 5 seconds, and if said subsystem is their shields....
Disruptors have a small chance of lowering people's Damage Resistances (from their hull plating and certain skills). And in a world where most of the big time PVp'ers have high damage resistances, every little debuff counts.
Polaron has a chance of drain power from subsystems for a few seconds, plus purple cannon fire looks awesome.
The consoles look great and so does the Boff layout. Though i will defer to a more experienced PVP'er for their input.
the build is very good. I would use the 1st set of skills for BoFF, 2 copys of BO in an escort don't have much sense. If u want u can replace 1 copy of BO for target to subsystems (target to engines for kill, and target to weapons for save your ***, o the *** of a teammate)
For an advanced escort i will prefer 4 DHC, BO is more usefull in defiant retrofit because of clock+alpha.
U will be fine with that build, just be sure of have good keybinds, and practice for improve your skills, timming is everthing in an escort, use ur buff/skills properly and u will own
p.d: u have 2x TSS, be sure of have a good power lvl in aux.