the sylver launcher will not fit behind the goalkeeper (look in the belowdeck parts thread why, the GK can no longer be reloaded if it is fitted there)
also, may I suggest the updated drawing of the oto melara 76?
IIRC, the sabre is fitted mostly on larger ships and all I know of have 2 of them fitted, for both forward and aft arcs. you should check this maybe
other then that, it looks good.